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authorarr <arr@FreeBSD.org>2002-02-22 04:14:49 +0000
committerarr <arr@FreeBSD.org>2002-02-22 04:14:49 +0000
commit80237bc8330990124d812157db632d43a8bee36b (patch)
treeeda8790765cf392f069377a1acf6607cbab478a0 /sys
parent38d02464ac75e4ae210a4eebde84e102691d8f55 (diff)
downloadFreeBSD-src-80237bc8330990124d812157db632d43a8bee36b.zip
FreeBSD-src-80237bc8330990124d812157db632d43a8bee36b.tar.gz
- Massive style fixup.
Reviewed by: mike Approved by: dfr
Diffstat (limited to 'sys')
-rw-r--r--sys/kern/kern_linker.c2560
1 files changed, 1292 insertions, 1268 deletions
diff --git a/sys/kern/kern_linker.c b/sys/kern/kern_linker.c
index b5e8070..467c343 100644
--- a/sys/kern/kern_linker.c
+++ b/sys/kern/kern_linker.c
@@ -52,11 +52,14 @@
int kld_debug = 0;
#endif
-/*static char *linker_search_path(const char *name, struct mod_depend *verinfo);*/
-static const char *linker_basename(const char* path);
-static int linker_load_module(const char *kldname, const char *modname,
- struct linker_file *parent, struct mod_depend *verinfo,
- struct linker_file **lfpp);
+/*
+ * static char *linker_search_path(const char *name, struct mod_depend
+ * *verinfo);
+ */
+static const char *linker_basename(const char *path);
+static int linker_load_module(const char *kldname, const char *modname,
+ struct linker_file *parent, struct mod_depend *verinfo,
+ struct linker_file **lfpp);
/* Metadata from the static kernel */
SET_DECLARE(modmetadata_set, struct mod_metadata);
@@ -71,623 +74,616 @@ static linker_file_list_t linker_files;
static int next_file_id = 1;
#define LINKER_GET_NEXT_FILE_ID(a) do { \
- linker_file_t lftmp; \
+ linker_file_t lftmp; \
\
retry: \
- TAILQ_FOREACH(lftmp, &linker_files, link) { \
- if (next_file_id == lftmp->id) { \
- next_file_id++; \
- goto retry; \
- } \
- } \
- (a) = next_file_id; \
+ TAILQ_FOREACH(lftmp, &linker_files, link) { \
+ if (next_file_id == lftmp->id) { \
+ next_file_id++; \
+ goto retry; \
+ } \
+ } \
+ (a) = next_file_id; \
} while(0)
/* XXX wrong name; we're looking at version provision tags here, not modules */
typedef TAILQ_HEAD(, modlist) modlisthead_t;
struct modlist {
- TAILQ_ENTRY(modlist) link; /* chain together all modules */
- linker_file_t container;
- const char *name;
- int version;
+ TAILQ_ENTRY(modlist) link; /* chain together all modules */
+ linker_file_t container;
+ const char *name;
+ int version;
};
-typedef struct modlist *modlist_t;
-static modlisthead_t found_modules;
+typedef struct modlist *modlist_t;
+static modlisthead_t found_modules;
static char *
linker_strdup(const char *str)
{
- char *result;
+ char *result;
- if ((result = malloc((strlen(str) + 1), M_LINKER, M_WAITOK)) != NULL)
- strcpy(result, str);
- return(result);
+ if ((result = malloc((strlen(str) + 1), M_LINKER, M_WAITOK)) != NULL)
+ strcpy(result, str);
+ return (result);
}
static void
-linker_init(void* arg)
+linker_init(void *arg)
{
- lockinit(&lock, PVM, "klink", 0, 0);
- TAILQ_INIT(&classes);
- TAILQ_INIT(&linker_files);
+
+ lockinit(&lock, PVM, "klink", 0, 0);
+ TAILQ_INIT(&classes);
+ TAILQ_INIT(&linker_files);
}
-SYSINIT(linker, SI_SUB_KLD, SI_ORDER_FIRST, linker_init, 0);
+SYSINIT(linker, SI_SUB_KLD, SI_ORDER_FIRST, linker_init, 0)
int
linker_add_class(linker_class_t lc)
{
- kobj_class_compile((kobj_class_t) lc);
- TAILQ_INSERT_TAIL(&classes, lc, link);
- return 0;
+
+ kobj_class_compile((kobj_class_t) lc);
+ TAILQ_INSERT_TAIL(&classes, lc, link);
+ return (0);
}
static void
linker_file_sysinit(linker_file_t lf)
{
- struct sysinit** start, ** stop;
- struct sysinit** sipp;
- struct sysinit** xipp;
- struct sysinit* save;
-
- KLD_DPF(FILE, ("linker_file_sysinit: calling SYSINITs for %s\n",
- lf->filename));
-
- if (linker_file_lookup_set(lf, "sysinit_set", &start, &stop, NULL) != 0)
- return;
- /*
- * Perform a bubble sort of the system initialization objects by
- * their subsystem (primary key) and order (secondary key).
- *
- * Since some things care about execution order, this is the
- * operation which ensures continued function.
- */
- for (sipp = start; sipp < stop; sipp++) {
- for (xipp = sipp + 1; xipp < stop; xipp++) {
- if ((*sipp)->subsystem < (*xipp)->subsystem ||
- ((*sipp)->subsystem == (*xipp)->subsystem &&
- (*sipp)->order <= (*xipp)->order))
- continue; /* skip*/
- save = *sipp;
- *sipp = *xipp;
- *xipp = save;
- }
- }
+ struct sysinit **start, **stop, **sipp, **xipp, *save;
+ KLD_DPF(FILE, ("linker_file_sysinit: calling SYSINITs for %s\n",
+ lf->filename));
- /*
- * Traverse the (now) ordered list of system initialization tasks.
- * Perform each task, and continue on to the next task.
- */
- for (sipp = start; sipp < stop; sipp++) {
- if ((*sipp)->subsystem == SI_SUB_DUMMY)
- continue; /* skip dummy task(s)*/
+ if (linker_file_lookup_set(lf, "sysinit_set", &start, &stop, NULL) != 0)
+ return;
+ /*
+ * Perform a bubble sort of the system initialization objects by
+ * their subsystem (primary key) and order (secondary key).
+ *
+ * Since some things care about execution order, this is the operation
+ * which ensures continued function.
+ */
+ for (sipp = start; sipp < stop; sipp++) {
+ for (xipp = sipp + 1; xipp < stop; xipp++) {
+ if ((*sipp)->subsystem < (*xipp)->subsystem ||
+ ((*sipp)->subsystem == (*xipp)->subsystem &&
+ (*sipp)->order <= (*xipp)->order))
+ continue; /* skip */
+ save = *sipp;
+ *sipp = *xipp;
+ *xipp = save;
+ }
+ }
- /* Call function */
- (*((*sipp)->func))((*sipp)->udata);
- }
+ /*
+ * Traverse the (now) ordered list of system initialization tasks.
+ * Perform each task, and continue on to the next task.
+ */
+ for (sipp = start; sipp < stop; sipp++) {
+ if ((*sipp)->subsystem == SI_SUB_DUMMY)
+ continue; /* skip dummy task(s) */
+
+ /* Call function */
+ (*((*sipp)->func)) ((*sipp)->udata);
+ }
}
static void
linker_file_sysuninit(linker_file_t lf)
{
- struct sysinit** start, ** stop;
- struct sysinit** sipp;
- struct sysinit** xipp;
- struct sysinit* save;
-
- KLD_DPF(FILE, ("linker_file_sysuninit: calling SYSUNINITs for %s\n",
- lf->filename));
-
- if (linker_file_lookup_set(lf, "sysuninit_set", &start, &stop, NULL) != 0)
- return;
-
- /*
- * Perform a reverse bubble sort of the system initialization objects
- * by their subsystem (primary key) and order (secondary key).
- *
- * Since some things care about execution order, this is the
- * operation which ensures continued function.
- */
- for (sipp = start; sipp < stop; sipp++) {
- for (xipp = sipp + 1; xipp < stop; xipp++) {
- if ((*sipp)->subsystem > (*xipp)->subsystem ||
- ((*sipp)->subsystem == (*xipp)->subsystem &&
- (*sipp)->order >= (*xipp)->order))
- continue; /* skip*/
- save = *sipp;
- *sipp = *xipp;
- *xipp = save;
+ struct sysinit **start, **stop, **sipp, **xipp, *save;
+
+ KLD_DPF(FILE, ("linker_file_sysuninit: calling SYSUNINITs for %s\n",
+ lf->filename));
+
+ if (linker_file_lookup_set(lf, "sysuninit_set", &start, &stop,
+ NULL) != 0)
+ return;
+
+ /*
+ * Perform a reverse bubble sort of the system initialization objects
+ * by their subsystem (primary key) and order (secondary key).
+ *
+ * Since some things care about execution order, this is the operation
+ * which ensures continued function.
+ */
+ for (sipp = start; sipp < stop; sipp++) {
+ for (xipp = sipp + 1; xipp < stop; xipp++) {
+ if ((*sipp)->subsystem > (*xipp)->subsystem ||
+ ((*sipp)->subsystem == (*xipp)->subsystem &&
+ (*sipp)->order >= (*xipp)->order))
+ continue; /* skip */
+ save = *sipp;
+ *sipp = *xipp;
+ *xipp = save;
+ }
+ }
+
+ /*
+ * Traverse the (now) ordered list of system initialization tasks.
+ * Perform each task, and continue on to the next task.
+ */
+ for (sipp = start; sipp < stop; sipp++) {
+ if ((*sipp)->subsystem == SI_SUB_DUMMY)
+ continue; /* skip dummy task(s) */
+
+ /* Call function */
+ (*((*sipp)->func)) ((*sipp)->udata);
}
- }
-
- /*
- * Traverse the (now) ordered list of system initialization tasks.
- * Perform each task, and continue on to the next task.
- */
- for (sipp = start; sipp < stop; sipp++) {
- if ((*sipp)->subsystem == SI_SUB_DUMMY)
- continue; /* skip dummy task(s)*/
-
- /* Call function */
- (*((*sipp)->func))((*sipp)->udata);
- }
}
static void
linker_file_register_sysctls(linker_file_t lf)
{
- struct sysctl_oid **start, **stop, **oidp;
+ struct sysctl_oid **start, **stop, **oidp;
- KLD_DPF(FILE, ("linker_file_register_sysctls: registering SYSCTLs for %s\n",
- lf->filename));
+ KLD_DPF(FILE,
+ ("linker_file_register_sysctls: registering SYSCTLs for %s\n",
+ lf->filename));
- if (linker_file_lookup_set(lf, "sysctl_set", &start, &stop, NULL) != 0)
- return;
+ if (linker_file_lookup_set(lf, "sysctl_set", &start, &stop, NULL) != 0)
+ return;
- for (oidp = start; oidp < stop; oidp++)
- sysctl_register_oid(*oidp);
+ for (oidp = start; oidp < stop; oidp++)
+ sysctl_register_oid(*oidp);
}
static void
linker_file_unregister_sysctls(linker_file_t lf)
{
- struct sysctl_oid **start, **stop, **oidp;
+ struct sysctl_oid **start, **stop, **oidp;
- KLD_DPF(FILE, ("linker_file_unregister_sysctls: registering SYSCTLs for %s\n",
- lf->filename));
+ KLD_DPF(FILE, ("linker_file_unregister_sysctls: registering SYSCTLs"
+ " for %s\n", lf->filename));
- if (linker_file_lookup_set(lf, "sysctl_set", &start, &stop, NULL) != 0)
- return;
+ if (linker_file_lookup_set(lf, "sysctl_set", &start, &stop, NULL) != 0)
+ return;
- for (oidp = start; oidp < stop; oidp++)
- sysctl_unregister_oid(*oidp);
+ for (oidp = start; oidp < stop; oidp++)
+ sysctl_unregister_oid(*oidp);
}
static int
linker_file_register_modules(linker_file_t lf)
{
- int error;
- struct mod_metadata **start, **stop;
- struct mod_metadata **mdp;
- const moduledata_t *moddata;
-
- KLD_DPF(FILE, ("linker_file_register_modules: registering modules in %s\n",
- lf->filename));
+ struct mod_metadata **start, **stop, **mdp;
+ const moduledata_t *moddata;
+ int error;
- if (linker_file_lookup_set(lf, "modmetadata_set", &start, &stop, 0) != 0) {
- /*
- * This fallback should be unnecessary, but if we get booted from
- * boot2 instead of loader and we are missing our metadata then
- * we have to try the best we can.
- */
- if (lf == linker_kernel_file) {
- start = SET_BEGIN(modmetadata_set);
- stop = SET_LIMIT(modmetadata_set);
- } else {
- return 0;
+ KLD_DPF(FILE, ("linker_file_register_modules: registering modules"
+ " in %s\n", lf->filename));
+
+ if (linker_file_lookup_set(lf, "modmetadata_set", &start,
+ &stop, 0) != 0) {
+ /*
+ * This fallback should be unnecessary, but if we get booted
+ * from boot2 instead of loader and we are missing our
+ * metadata then we have to try the best we can.
+ */
+ if (lf == linker_kernel_file) {
+ start = SET_BEGIN(modmetadata_set);
+ stop = SET_LIMIT(modmetadata_set);
+ } else
+ return (0);
}
- }
- for (mdp = start; mdp < stop; mdp++) {
- if ((*mdp)->md_type != MDT_MODULE)
- continue;
- moddata = (*mdp)->md_data;
- KLD_DPF(FILE, ("Registering module %s in %s\n",
- moddata->name, lf->filename));
- if (module_lookupbyname(moddata->name) != NULL) {
- printf("Warning: module %s already exists\n", moddata->name);
- continue; /* or return a error ? */
+ for (mdp = start; mdp < stop; mdp++) {
+ if ((*mdp)->md_type != MDT_MODULE)
+ continue;
+ moddata = (*mdp)->md_data;
+ KLD_DPF(FILE, ("Registering module %s in %s\n",
+ moddata->name, lf->filename));
+ if (module_lookupbyname(moddata->name) != NULL) {
+ printf("Warning: module %s already exists\n",
+ moddata->name);
+ continue; /* or return a error ? */
+ }
+ error = module_register(moddata, lf);
+ if (error)
+ printf("Module %s failed to register: %d\n",
+ moddata->name, error);
}
- error = module_register(moddata, lf);
- if (error)
- printf("Module %s failed to register: %d\n", moddata->name, error);
- }
- return 0;
+ return (0);
}
static void
linker_init_kernel_modules(void)
{
- linker_file_register_modules(linker_kernel_file);
+
+ linker_file_register_modules(linker_kernel_file);
}
-SYSINIT(linker_kernel, SI_SUB_KLD, SI_ORDER_ANY, linker_init_kernel_modules, 0);
+SYSINIT(linker_kernel, SI_SUB_KLD, SI_ORDER_ANY, linker_init_kernel_modules, 0)
int
-linker_load_file(const char* filename, linker_file_t* result)
+linker_load_file(const char *filename, linker_file_t *result)
{
- linker_class_t lc;
- linker_file_t lf;
- int foundfile, error = 0;
-
- /* Refuse to load modules if securelevel raised */
- if (securelevel > 0)
- return EPERM;
-
- lf = linker_find_file_by_name(filename);
- if (lf) {
- KLD_DPF(FILE, ("linker_load_file: file %s is already loaded, incrementing refs\n", filename));
- *result = lf;
- lf->refs++;
- goto out;
- }
-
- lf = NULL;
- foundfile = 0;
- TAILQ_FOREACH(lc, &classes, link) {
- KLD_DPF(FILE, ("linker_load_file: trying to load %s\n",
- filename));
- error = LINKER_LOAD_FILE(lc, filename, &lf);
- /*
- * If we got something other than ENOENT, then it exists but we cannot
- * load it for some other reason.
- */
- if (error != ENOENT)
- foundfile = 1;
+ linker_class_t lc;
+ linker_file_t lf;
+ int foundfile, error = 0;
+
+ /* Refuse to load modules if securelevel raised */
+ if (securelevel > 0)
+ return (EPERM);
+
+ lf = linker_find_file_by_name(filename);
if (lf) {
- linker_file_register_modules(lf);
- linker_file_register_sysctls(lf);
- linker_file_sysinit(lf);
- lf->flags |= LINKER_FILE_LINKED;
-
- *result = lf;
- error = 0;
- goto out;
+ KLD_DPF(FILE, ("linker_load_file: file %s is already loaded,"
+ " incrementing refs\n", filename));
+ *result = lf;
+ lf->refs++;
+ goto out;
}
- }
- /*
- * Less than ideal, but tells the user whether it failed to load or
- * the module was not found.
- */
- if (foundfile)
- error = ENOEXEC; /* Format not recognised (or unloadable) */
- else
- error = ENOENT; /* Nothing found */
-
+ lf = NULL;
+ foundfile = 0;
+ TAILQ_FOREACH(lc, &classes, link) {
+ KLD_DPF(FILE, ("linker_load_file: trying to load %s\n",
+ filename));
+ error = LINKER_LOAD_FILE(lc, filename, &lf);
+ /*
+ * If we got something other than ENOENT, then it exists but
+ * we cannot load it for some other reason.
+ */
+ if (error != ENOENT)
+ foundfile = 1;
+ if (lf) {
+ linker_file_register_modules(lf);
+ linker_file_register_sysctls(lf);
+ linker_file_sysinit(lf);
+ lf->flags |= LINKER_FILE_LINKED;
+ *result = lf;
+ error = 0;
+ goto out;
+ }
+ }
+ /*
+ * Less than ideal, but tells the user whether it failed to load or
+ * the module was not found.
+ */
+ if (foundfile)
+ error = ENOEXEC; /* Format not recognised (or unloadable) */
+ else
+ error = ENOENT; /* Nothing found */
out:
- return error;
+ return (error);
}
/* XXX: function parameters are incomplete */
int
linker_reference_module(const char *modname, linker_file_t *result)
{
-
- return linker_load_module(NULL, modname, NULL, NULL, result);
+ return (linker_load_module(NULL, modname, NULL, NULL, result));
}
linker_file_t
-linker_find_file_by_name(const char* filename)
+linker_find_file_by_name(const char *filename)
{
- linker_file_t lf = 0;
- char *koname;
-
- koname = malloc(strlen(filename) + 4, M_LINKER, M_WAITOK);
- if (koname == NULL)
- goto out;
- sprintf(koname, "%s.ko", filename);
-
- lockmgr(&lock, LK_SHARED, 0, curthread);
- TAILQ_FOREACH(lf, &linker_files, link) {
- if (!strcmp(lf->filename, koname))
- break;
- if (!strcmp(lf->filename, filename))
- break;
- }
- lockmgr(&lock, LK_RELEASE, 0, curthread);
+ linker_file_t lf = 0;
+ char *koname;
+ int err;
+ koname = malloc(strlen(filename) + 4, M_LINKER, M_WAITOK);
+ if (koname == NULL)
+ goto out;
+ sprintf(koname, "%s.ko", filename);
+
+ lockmgr(&lock, LK_SHARED, 0, curthread);
+ TAILQ_FOREACH(lf, &linker_files, link) {
+ err = strcmp(lf->filename, koname);
+ if (err == 0)
+ break;
+ err = strcmp(lf->filename, filename);
+ if (err == 0)
+ break;
+ }
+ lockmgr(&lock, LK_RELEASE, 0, curthread);
out:
- if (koname)
- free(koname, M_LINKER);
- return lf;
+ if (koname)
+ free(koname, M_LINKER);
+ return (lf);
}
linker_file_t
linker_find_file_by_id(int fileid)
{
- linker_file_t lf = 0;
-
- lockmgr(&lock, LK_SHARED, 0, curthread);
- TAILQ_FOREACH(lf, &linker_files, link)
- if (lf->id == fileid)
- break;
- lockmgr(&lock, LK_RELEASE, 0, curthread);
+ linker_file_t lf = 0;
- return lf;
+ lockmgr(&lock, LK_SHARED, 0, curthread);
+ TAILQ_FOREACH(lf, &linker_files, link)
+ if (lf->id == fileid)
+ break;
+ lockmgr(&lock, LK_RELEASE, 0, curthread);
+ return (lf);
}
linker_file_t
-linker_make_file(const char* pathname, linker_class_t lc)
+linker_make_file(const char *pathname, linker_class_t lc)
{
- linker_file_t lf = 0;
- const char *filename;
-
- filename = linker_basename(pathname);
-
- KLD_DPF(FILE, ("linker_make_file: new file, filename=%s\n", filename));
- lockmgr(&lock, LK_EXCLUSIVE, 0, curthread);
- lf = (linker_file_t) kobj_create((kobj_class_t) lc, M_LINKER, M_WAITOK);
- if (!lf)
- goto out;
-
- lf->refs = 1;
- lf->userrefs = 0;
- lf->flags = 0;
- lf->filename = linker_strdup(filename);
- LINKER_GET_NEXT_FILE_ID(lf->id);
- lf->ndeps = 0;
- lf->deps = NULL;
- STAILQ_INIT(&lf->common);
- TAILQ_INIT(&lf->modules);
+ linker_file_t lf;
+ const char *filename;
- TAILQ_INSERT_TAIL(&linker_files, lf, link);
+ lf = NULL;
+ filename = linker_basename(pathname);
+ KLD_DPF(FILE, ("linker_make_file: new file, filename=%s\n", filename));
+ lockmgr(&lock, LK_EXCLUSIVE, 0, curthread);
+ lf = (linker_file_t)kobj_create((kobj_class_t)lc, M_LINKER, M_WAITOK);
+ if (lf == NULL)
+ goto out;
+ lf->refs = 1;
+ lf->userrefs = 0;
+ lf->flags = 0;
+ lf->filename = linker_strdup(filename);
+ LINKER_GET_NEXT_FILE_ID(lf->id);
+ lf->ndeps = 0;
+ lf->deps = NULL;
+ STAILQ_INIT(&lf->common);
+ TAILQ_INIT(&lf->modules);
+ TAILQ_INSERT_TAIL(&linker_files, lf, link);
out:
- lockmgr(&lock, LK_RELEASE, 0, curthread);
- return lf;
+ lockmgr(&lock, LK_RELEASE, 0, curthread);
+ return (lf);
}
int
linker_file_unload(linker_file_t file)
{
- module_t mod, next;
- modlist_t ml, nextml;
- struct common_symbol* cp;
- int error = 0;
- int i;
-
- /* Refuse to unload modules if securelevel raised */
- if (securelevel > 0)
- return EPERM;
-
- KLD_DPF(FILE, ("linker_file_unload: lf->refs=%d\n", file->refs));
- lockmgr(&lock, LK_EXCLUSIVE, 0, curthread);
- if (file->refs == 1) {
- KLD_DPF(FILE, ("linker_file_unload: file is unloading, informing modules\n"));
- /*
- * Inform any modules associated with this file.
- */
- for (mod = TAILQ_FIRST(&file->modules); mod; mod = next) {
- next = module_getfnext(mod);
-
- /*
- * Give the module a chance to veto the unload.
- */
- if ((error = module_unload(mod)) != 0) {
- KLD_DPF(FILE, ("linker_file_unload: module %x vetoes unload\n",
- mod));
+ module_t mod, next;
+ modlist_t ml, nextml;
+ struct common_symbol *cp;
+ int error, i;
+
+ error = 0;
+
+ /* Refuse to unload modules if securelevel raised. */
+ if (securelevel > 0)
+ return (EPERM);
+
+ KLD_DPF(FILE, ("linker_file_unload: lf->refs=%d\n", file->refs));
+ lockmgr(&lock, LK_EXCLUSIVE, 0, curthread);
+ if (file->refs == 1) {
+ KLD_DPF(FILE, ("linker_file_unload: file is unloading,"
+ " informing modules\n"));
+
+ /*
+ * Inform any modules associated with this file.
+ */
+ for (mod = TAILQ_FIRST(&file->modules); mod; mod = next) {
+ next = module_getfnext(mod);
+
+ /*
+ * Give the module a chance to veto the unload.
+ */
+ if ((error = module_unload(mod)) != 0) {
+ KLD_DPF(FILE, ("linker_file_unload: module %x"
+ " vetoes unload\n", mod));
+ lockmgr(&lock, LK_RELEASE, 0, curthread);
+ goto out;
+ }
+ module_release(mod);
+ }
+ }
+ file->refs--;
+ if (file->refs > 0) {
lockmgr(&lock, LK_RELEASE, 0, curthread);
goto out;
- }
-
- module_release(mod);
}
- }
+ for (ml = TAILQ_FIRST(&found_modules); ml; ml = nextml) {
+ nextml = TAILQ_NEXT(ml, link);
+ if (ml->container == file)
+ TAILQ_REMOVE(&found_modules, ml, link);
+ }
- file->refs--;
- if (file->refs > 0) {
+ /*
+ * Don't try to run SYSUNINITs if we are unloaded due to a
+ * link error.
+ */
+ if (file->flags & LINKER_FILE_LINKED) {
+ linker_file_sysuninit(file);
+ linker_file_unregister_sysctls(file);
+ }
+ TAILQ_REMOVE(&linker_files, file, link);
lockmgr(&lock, LK_RELEASE, 0, curthread);
- goto out;
- }
- for (ml = TAILQ_FIRST(&found_modules); ml; ml = nextml) {
- nextml = TAILQ_NEXT(ml, link);
- if (ml->container == file) {
- TAILQ_REMOVE(&found_modules, ml, link);
+ if (file->deps) {
+ for (i = 0; i < file->ndeps; i++)
+ linker_file_unload(file->deps[i]);
+ free(file->deps, M_LINKER);
+ file->deps = NULL;
+ }
+ for (cp = STAILQ_FIRST(&file->common); cp;
+ cp = STAILQ_FIRST(&file->common)) {
+ STAILQ_REMOVE(&file->common, cp, common_symbol, link);
+ free(cp, M_LINKER);
}
- }
-
- /* Don't try to run SYSUNINITs if we are unloaded due to a link error */
- if (file->flags & LINKER_FILE_LINKED) {
- linker_file_sysuninit(file);
- linker_file_unregister_sysctls(file);
- }
-
- TAILQ_REMOVE(&linker_files, file, link);
- lockmgr(&lock, LK_RELEASE, 0, curthread);
-
- if (file->deps) {
- for (i = 0; i < file->ndeps; i++)
- linker_file_unload(file->deps[i]);
- free(file->deps, M_LINKER);
- file->deps = NULL;
- }
-
- for (cp = STAILQ_FIRST(&file->common); cp;
- cp = STAILQ_FIRST(&file->common)) {
- STAILQ_REMOVE(&file->common, cp, common_symbol, link);
- free(cp, M_LINKER);
- }
-
- LINKER_UNLOAD(file);
- if (file->filename) {
- free(file->filename, M_LINKER);
- file->filename = NULL;
- }
- kobj_delete((kobj_t) file, M_LINKER);
+ LINKER_UNLOAD(file);
+ if (file->filename) {
+ free(file->filename, M_LINKER);
+ file->filename = NULL;
+ }
+ kobj_delete((kobj_t) file, M_LINKER);
out:
- return error;
+ return (error);
}
int
linker_file_add_dependency(linker_file_t file, linker_file_t dep)
{
- linker_file_t* newdeps;
-
- newdeps = malloc((file->ndeps + 1) * sizeof(linker_file_t*),
- M_LINKER, M_WAITOK | M_ZERO);
- if (newdeps == NULL)
- return ENOMEM;
-
- if (file->deps) {
- bcopy(file->deps, newdeps, file->ndeps * sizeof(linker_file_t*));
- free(file->deps, M_LINKER);
- }
- file->deps = newdeps;
- file->deps[file->ndeps] = dep;
- file->ndeps++;
-
- return 0;
+ linker_file_t *newdeps;
+
+ newdeps = malloc((file->ndeps + 1) * sizeof(linker_file_t *),
+ M_LINKER, M_WAITOK | M_ZERO);
+ if (newdeps == NULL)
+ return (ENOMEM);
+
+ if (file->deps) {
+ bcopy(file->deps, newdeps,
+ file->ndeps * sizeof(linker_file_t *));
+ free(file->deps, M_LINKER);
+ }
+ file->deps = newdeps;
+ file->deps[file->ndeps] = dep;
+ file->ndeps++;
+ return (0);
}
/*
- * Locate a linker set and its contents.
- * This is a helper function to avoid linker_if.h exposure elsewhere.
- * Note: firstp and lastp are really void ***
+ * Locate a linker set and its contents. This is a helper function to avoid
+ * linker_if.h exposure elsewhere. Note: firstp and lastp are really void ***
*/
int
linker_file_lookup_set(linker_file_t file, const char *name,
- void *firstp, void *lastp, int *countp)
+ void *firstp, void *lastp, int *countp)
{
- return LINKER_LOOKUP_SET(file, name, firstp, lastp, countp);
+ return (LINKER_LOOKUP_SET(file, name, firstp, lastp, countp));
}
caddr_t
-linker_file_lookup_symbol(linker_file_t file, const char* name, int deps)
+linker_file_lookup_symbol(linker_file_t file, const char *name, int deps)
{
- c_linker_sym_t sym;
- linker_symval_t symval;
- caddr_t address;
- size_t common_size = 0;
- int i;
-
- KLD_DPF(SYM, ("linker_file_lookup_symbol: file=%x, name=%s, deps=%d\n",
- file, name, deps));
-
- if (LINKER_LOOKUP_SYMBOL(file, name, &sym) == 0) {
- LINKER_SYMBOL_VALUES(file, sym, &symval);
- if (symval.value == 0)
- /*
- * For commons, first look them up in the dependencies and
- * only allocate space if not found there.
- */
- common_size = symval.size;
- else {
- KLD_DPF(SYM, ("linker_file_lookup_symbol: symbol.value=%x\n", symval.value));
- return symval.value;
+ c_linker_sym_t sym;
+ linker_symval_t symval;
+ caddr_t address;
+ size_t common_size = 0;
+ int err, i;
+
+ KLD_DPF(SYM, ("linker_file_lookup_symbol: file=%x, name=%s, deps=%d\n",
+ file, name, deps));
+
+ if (LINKER_LOOKUP_SYMBOL(file, name, &sym) == 0) {
+ LINKER_SYMBOL_VALUES(file, sym, &symval);
+ if (symval.value == 0)
+ /*
+ * For commons, first look them up in the
+ * dependencies and only allocate space if not found
+ * there.
+ */
+ common_size = symval.size;
+ else {
+ KLD_DPF(SYM, ("linker_file_lookup_symbol: symbol"
+ ".value=%x\n", symval.value));
+ return (symval.value);
+ }
}
- }
-
- if (deps) {
- for (i = 0; i < file->ndeps; i++) {
- address = linker_file_lookup_symbol(file->deps[i], name, 0);
- if (address) {
- KLD_DPF(SYM, ("linker_file_lookup_symbol: deps value=%x\n", address));
- return address;
- }
+ if (deps) {
+ for (i = 0; i < file->ndeps; i++) {
+ address = linker_file_lookup_symbol(file->deps[i],
+ name, 0);
+ if (address) {
+ KLD_DPF(SYM, ("linker_file_lookup_symbol:"
+ " deps value=%x\n", address));
+ return (address);
+ }
+ }
}
- }
-
- if (common_size > 0) {
- /*
- * This is a common symbol which was not found in the
- * dependencies. We maintain a simple common symbol table in
- * the file object.
- */
- struct common_symbol* cp;
-
- STAILQ_FOREACH(cp, &file->common, link)
- if (!strcmp(cp->name, name)) {
- KLD_DPF(SYM, ("linker_file_lookup_symbol: old common value=%x\n", cp->address));
- return cp->address;
- }
-
- /*
- * Round the symbol size up to align.
- */
- common_size = (common_size + sizeof(int) - 1) & -sizeof(int);
- cp = malloc(sizeof(struct common_symbol)
- + common_size
- + strlen(name) + 1,
- M_LINKER, M_WAITOK | M_ZERO);
- if (!cp) {
- KLD_DPF(SYM, ("linker_file_lookup_symbol: nomem\n"));
- return 0;
+ if (common_size > 0) {
+ /*
+ * This is a common symbol which was not found in the
+ * dependencies. We maintain a simple common symbol table in
+ * the file object.
+ */
+ struct common_symbol *cp;
+
+ STAILQ_FOREACH(cp, &file->common, link) {
+ err = strcmp(cp->name, name);
+ if (err == 0) {
+ KLD_DPF(SYM, ("linker_file_lookup_symbol:"
+ " old common value=%x\n", cp->address));
+ return (cp->address);
+ }
+ }
+ /*
+ * Round the symbol size up to align.
+ */
+ common_size = (common_size + sizeof(int) - 1) & -sizeof(int);
+ cp = malloc(sizeof(struct common_symbol)
+ + common_size + strlen(name) + 1, M_LINKER,
+ M_WAITOK | M_ZERO);
+ if (cp == NULL) {
+ KLD_DPF(SYM, ("linker_file_lookup_symbol: nomem\n"));
+ return (0);
+ }
+ cp->address = (caddr_t)(cp + 1);
+ cp->name = cp->address + common_size;
+ strcpy(cp->name, name);
+ bzero(cp->address, common_size);
+ STAILQ_INSERT_TAIL(&file->common, cp, link);
+
+ KLD_DPF(SYM, ("linker_file_lookup_symbol: new common"
+ " value=%x\n", cp->address));
+ return (cp->address);
}
-
- cp->address = (caddr_t) (cp + 1);
- cp->name = cp->address + common_size;
- strcpy(cp->name, name);
- bzero(cp->address, common_size);
- STAILQ_INSERT_TAIL(&file->common, cp, link);
-
- KLD_DPF(SYM, ("linker_file_lookup_symbol: new common value=%x\n", cp->address));
- return cp->address;
- }
-
- KLD_DPF(SYM, ("linker_file_lookup_symbol: fail\n"));
- return 0;
+ KLD_DPF(SYM, ("linker_file_lookup_symbol: fail\n"));
+ return (0);
}
#ifdef DDB
/*
- * DDB Helpers. DDB has to look across multiple files with their own
- * symbol tables and string tables.
- *
- * Note that we do not obey list locking protocols here. We really don't
- * need DDB to hang because somebody's got the lock held. We'll take the
- * chance that the files list is inconsistant instead.
+ * DDB Helpers. DDB has to look across multiple files with their own symbol
+ * tables and string tables.
+ *
+ * Note that we do not obey list locking protocols here. We really don't need
+ * DDB to hang because somebody's got the lock held. We'll take the chance
+ * that the files list is inconsistant instead.
*/
int
linker_ddb_lookup(const char *symstr, c_linker_sym_t *sym)
{
- linker_file_t lf;
+ linker_file_t lf;
- TAILQ_FOREACH(lf, &linker_files, link) {
- if (LINKER_LOOKUP_SYMBOL(lf, symstr, sym) == 0)
- return 0;
- }
- return ENOENT;
+ TAILQ_FOREACH(lf, &linker_files, link) {
+ if (LINKER_LOOKUP_SYMBOL(lf, symstr, sym) == 0)
+ return (0);
+ }
+ return (ENOENT);
}
int
linker_ddb_search_symbol(caddr_t value, c_linker_sym_t *sym, long *diffp)
{
- linker_file_t lf;
- u_long off = (uintptr_t)value;
- u_long diff, bestdiff;
- c_linker_sym_t best;
- c_linker_sym_t es;
-
- best = 0;
- bestdiff = off;
- TAILQ_FOREACH(lf, &linker_files, link) {
- if (LINKER_SEARCH_SYMBOL(lf, value, &es, &diff) != 0)
- continue;
- if (es != 0 && diff < bestdiff) {
- best = es;
- bestdiff = diff;
+ linker_file_t lf;
+ c_linker_sym_t best, es;
+ u_long diff, bestdiff, off;
+
+ best = 0;
+ off = (uintptr_t)value;
+ bestdiff = off;
+ TAILQ_FOREACH(lf, &linker_files, link) {
+ if (LINKER_SEARCH_SYMBOL(lf, value, &es, &diff) != 0)
+ continue;
+ if (es != 0 && diff < bestdiff) {
+ best = es;
+ bestdiff = diff;
+ }
+ if (bestdiff == 0)
+ break;
+ }
+ if (best) {
+ *sym = best;
+ *diffp = bestdiff;
+ return (0);
+ } else {
+ *sym = 0;
+ *diffp = off;
+ return (ENOENT);
}
- if (bestdiff == 0)
- break;
- }
- if (best) {
- *sym = best;
- *diffp = bestdiff;
- return 0;
- } else {
- *sym = 0;
- *diffp = off;
- return ENOENT;
- }
}
int
linker_ddb_symbol_values(c_linker_sym_t sym, linker_symval_t *symval)
{
- linker_file_t lf;
+ linker_file_t lf;
- TAILQ_FOREACH(lf, &linker_files, link) {
- if (LINKER_SYMBOL_VALUES(lf, sym, symval) == 0)
- return 0;
- }
- return ENOENT;
+ TAILQ_FOREACH(lf, &linker_files, link) {
+ if (LINKER_SYMBOL_VALUES(lf, sym, symval) == 0)
+ return (0);
+ }
+ return (ENOENT);
}
-
#endif
/*
@@ -697,229 +693,225 @@ linker_ddb_symbol_values(c_linker_sym_t sym, linker_symval_t *symval)
* MPSAFE
*/
int
-kldload(struct thread* td, struct kldload_args* uap)
+kldload(struct thread *td, struct kldload_args *uap)
{
- char *kldname, *modname;
- char *pathname = NULL;
- linker_file_t lf;
- int error = 0;
-
- td->td_retval[0] = -1;
-
- if (securelevel > 0) /* redundant, but that's OK */
- return EPERM;
-
- mtx_lock(&Giant);
-
- if ((error = suser_xxx(td->td_proc->p_ucred, NULL, 0)) != 0)
- goto out;
-
- pathname = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
- if ((error = copyinstr(SCARG(uap, file), pathname, MAXPATHLEN, NULL)) != 0)
- goto out;
-
- /*
- * If path do not contain qualified name or any dot in it (kldname.ko, or
- * kldname.ver.ko) treat it as interface name.
- */
- if (index(pathname, '/') || index(pathname, '.')) {
- kldname = pathname;
- modname = NULL;
- } else {
- kldname = NULL;
- modname = pathname;
- }
- error = linker_load_module(kldname, modname, NULL, NULL, &lf);
- if (error)
- goto out;
-
- lf->userrefs++;
- td->td_retval[0] = lf->id;
+ char *kldname, *modname;
+ char *pathname = NULL;
+ linker_file_t lf;
+ int error = 0;
+
+ td->td_retval[0] = -1;
+ if (securelevel > 0) /* redundant, but that's OK */
+ return (EPERM);
+
+ mtx_lock(&Giant);
+
+ if ((error = suser_xxx(td->td_proc->p_ucred, NULL, 0)) != 0)
+ goto out;
+
+ pathname = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
+ if ((error = copyinstr(SCARG(uap, file), pathname, MAXPATHLEN,
+ NULL)) != 0)
+ goto out;
+
+ /*
+ * If path do not contain qualified name or any dot in it
+ * (kldname.ko, or kldname.ver.ko) treat it as interface
+ * name.
+ */
+ if (index(pathname, '/') || index(pathname, '.')) {
+ kldname = pathname;
+ modname = NULL;
+ } else {
+ kldname = NULL;
+ modname = pathname;
+ }
+ error = linker_load_module(kldname, modname, NULL, NULL, &lf);
+ if (error)
+ goto out;
+
+ lf->userrefs++;
+ td->td_retval[0] = lf->id;
out:
- if (pathname)
- free(pathname, M_TEMP);
- mtx_unlock(&Giant);
- return (error);
+ if (pathname)
+ free(pathname, M_TEMP);
+ mtx_unlock(&Giant);
+ return (error);
}
/*
* MPSAFE
*/
int
-kldunload(struct thread* td, struct kldunload_args* uap)
+kldunload(struct thread *td, struct kldunload_args *uap)
{
- linker_file_t lf;
- int error = 0;
+ linker_file_t lf;
+ int error = 0;
- if (securelevel > 0) /* redundant, but that's OK */
- return EPERM;
+ if (securelevel > 0) /* redundant, but that's OK */
+ return (EPERM);
- mtx_lock(&Giant);
+ mtx_lock(&Giant);
- if ((error = suser_xxx(td->td_proc->p_ucred, NULL, 0)) != 0)
- goto out;
+ if ((error = suser_xxx(td->td_proc->p_ucred, NULL, 0)) != 0)
+ goto out;
- lf = linker_find_file_by_id(SCARG(uap, fileid));
- if (lf) {
- KLD_DPF(FILE, ("kldunload: lf->userrefs=%d\n", lf->userrefs));
- if (lf->userrefs == 0) {
- printf("kldunload: attempt to unload file that was loaded by the kernel\n");
- error = EBUSY;
- goto out;
- }
- lf->userrefs--;
- error = linker_file_unload(lf);
- if (error)
- lf->userrefs++;
- } else {
- error = ENOENT;
- }
+ lf = linker_find_file_by_id(SCARG(uap, fileid));
+ if (lf) {
+ KLD_DPF(FILE, ("kldunload: lf->userrefs=%d\n", lf->userrefs));
+ if (lf->userrefs == 0) {
+ printf("kldunload: attempt to unload file that was"
+ " loaded by the kernel\n");
+ error = EBUSY;
+ goto out;
+ }
+ lf->userrefs--;
+ error = linker_file_unload(lf);
+ if (error)
+ lf->userrefs++;
+ } else
+ error = ENOENT;
out:
- mtx_unlock(&Giant);
- return (error);
+ mtx_unlock(&Giant);
+ return (error);
}
/*
* MPSAFE
*/
int
-kldfind(struct thread* td, struct kldfind_args* uap)
+kldfind(struct thread *td, struct kldfind_args *uap)
{
- char* pathname;
- const char *filename;
- linker_file_t lf;
- int error = 0;
-
- mtx_lock(&Giant);
- td->td_retval[0] = -1;
-
- pathname = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
- if ((error = copyinstr(SCARG(uap, file), pathname, MAXPATHLEN, NULL)) != 0)
- goto out;
+ char *pathname;
+ const char *filename;
+ linker_file_t lf;
+ int error = 0;
- filename = linker_basename(pathname);
+ mtx_lock(&Giant);
+ td->td_retval[0] = -1;
- lf = linker_find_file_by_name(filename);
- if (lf)
- td->td_retval[0] = lf->id;
- else
- error = ENOENT;
+ pathname = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
+ if ((error = copyinstr(SCARG(uap, file), pathname, MAXPATHLEN,
+ NULL)) != 0)
+ goto out;
+ filename = linker_basename(pathname);
+ lf = linker_find_file_by_name(filename);
+ if (lf)
+ td->td_retval[0] = lf->id;
+ else
+ error = ENOENT;
out:
- if (pathname)
- free(pathname, M_TEMP);
- mtx_unlock(&Giant);
- return (error);
+ if (pathname)
+ free(pathname, M_TEMP);
+ mtx_unlock(&Giant);
+ return (error);
}
/*
* MPSAFE
*/
int
-kldnext(struct thread* td, struct kldnext_args* uap)
+kldnext(struct thread *td, struct kldnext_args *uap)
{
- linker_file_t lf;
- int error = 0;
+ linker_file_t lf;
+ int error = 0;
- mtx_lock(&Giant);
+ mtx_lock(&Giant);
- if (SCARG(uap, fileid) == 0) {
- if (TAILQ_FIRST(&linker_files))
- td->td_retval[0] = TAILQ_FIRST(&linker_files)->id;
- else
- td->td_retval[0] = 0;
- goto out;
- }
-
- lf = linker_find_file_by_id(SCARG(uap, fileid));
- if (lf) {
- if (TAILQ_NEXT(lf, link))
- td->td_retval[0] = TAILQ_NEXT(lf, link)->id;
- else
- td->td_retval[0] = 0;
- } else {
- error = ENOENT;
- }
+ if (SCARG(uap, fileid) == 0) {
+ if (TAILQ_FIRST(&linker_files))
+ td->td_retval[0] = TAILQ_FIRST(&linker_files)->id;
+ else
+ td->td_retval[0] = 0;
+ goto out;
+ }
+ lf = linker_find_file_by_id(SCARG(uap, fileid));
+ if (lf) {
+ if (TAILQ_NEXT(lf, link))
+ td->td_retval[0] = TAILQ_NEXT(lf, link)->id;
+ else
+ td->td_retval[0] = 0;
+ } else
+ error = ENOENT;
out:
- mtx_unlock(&Giant);
- return (error);
+ mtx_unlock(&Giant);
+ return (error);
}
/*
* MPSAFE
*/
int
-kldstat(struct thread* td, struct kldstat_args* uap)
+kldstat(struct thread *td, struct kldstat_args *uap)
{
- linker_file_t lf;
- int error = 0;
- int version;
- struct kld_file_stat* stat;
- int namelen;
-
- mtx_lock(&Giant);
-
- lf = linker_find_file_by_id(SCARG(uap, fileid));
- if (!lf) {
- error = ENOENT;
- goto out;
- }
-
- stat = SCARG(uap, stat);
-
- /*
- * Check the version of the user's structure.
- */
- if ((error = copyin(&stat->version, &version, sizeof(version))) != 0)
- goto out;
- if (version != sizeof(struct kld_file_stat)) {
- error = EINVAL;
- goto out;
- }
-
- namelen = strlen(lf->filename) + 1;
- if (namelen > MAXPATHLEN)
- namelen = MAXPATHLEN;
- if ((error = copyout(lf->filename, &stat->name[0], namelen)) != 0)
- goto out;
- if ((error = copyout(&lf->refs, &stat->refs, sizeof(int))) != 0)
- goto out;
- if ((error = copyout(&lf->id, &stat->id, sizeof(int))) != 0)
- goto out;
- if ((error = copyout(&lf->address, &stat->address, sizeof(caddr_t))) != 0)
- goto out;
- if ((error = copyout(&lf->size, &stat->size, sizeof(size_t))) != 0)
- goto out;
-
- td->td_retval[0] = 0;
+ linker_file_t lf;
+ int error = 0;
+ int namelen, version;
+ struct kld_file_stat *stat;
+
+ mtx_lock(&Giant);
+
+ lf = linker_find_file_by_id(SCARG(uap, fileid));
+ if (lf == NULL) {
+ error = ENOENT;
+ goto out;
+ }
+ stat = SCARG(uap, stat);
+
+ /*
+ * Check the version of the user's structure.
+ */
+ if ((error = copyin(&stat->version, &version, sizeof(version))) != 0)
+ goto out;
+ if (version != sizeof(struct kld_file_stat)) {
+ error = EINVAL;
+ goto out;
+ }
+ namelen = strlen(lf->filename) + 1;
+ if (namelen > MAXPATHLEN)
+ namelen = MAXPATHLEN;
+ if ((error = copyout(lf->filename, &stat->name[0], namelen)) != 0)
+ goto out;
+ if ((error = copyout(&lf->refs, &stat->refs, sizeof(int))) != 0)
+ goto out;
+ if ((error = copyout(&lf->id, &stat->id, sizeof(int))) != 0)
+ goto out;
+ if ((error = copyout(&lf->address, &stat->address,
+ sizeof(caddr_t))) != 0)
+ goto out;
+ if ((error = copyout(&lf->size, &stat->size, sizeof(size_t))) != 0)
+ goto out;
+ td->td_retval[0] = 0;
out:
- mtx_unlock(&Giant);
- return (error);
+ mtx_unlock(&Giant);
+ return (error);
}
/*
* MPSAFE
*/
int
-kldfirstmod(struct thread* td, struct kldfirstmod_args* uap)
+kldfirstmod(struct thread *td, struct kldfirstmod_args *uap)
{
- linker_file_t lf;
- int error = 0;
-
- mtx_lock(&Giant);
- lf = linker_find_file_by_id(SCARG(uap, fileid));
- if (lf) {
- if (TAILQ_FIRST(&lf->modules))
- td->td_retval[0] = module_getid(TAILQ_FIRST(&lf->modules));
- else
- td->td_retval[0] = 0;
- } else {
- error = ENOENT;
- }
- mtx_unlock(&Giant);
- return (error);
+ linker_file_t lf;
+ module_t mp;
+ int error = 0;
+
+ mtx_lock(&Giant);
+ lf = linker_find_file_by_id(SCARG(uap, fileid));
+ if (lf) {
+ mp = TAILQ_FIRST(&lf->modules);
+ if (mp != NULL)
+ td->td_retval[0] = module_getid(mp);
+ else
+ td->td_retval[0] = 0;
+ } else
+ error = ENOENT;
+ mtx_unlock(&Giant);
+ return (error);
}
/*
@@ -928,57 +920,59 @@ kldfirstmod(struct thread* td, struct kldfirstmod_args* uap)
int
kldsym(struct thread *td, struct kldsym_args *uap)
{
- char *symstr = NULL;
- c_linker_sym_t sym;
- linker_symval_t symval;
- linker_file_t lf;
- struct kld_sym_lookup lookup;
- int error = 0;
-
- mtx_lock(&Giant);
-
- if ((error = copyin(SCARG(uap, data), &lookup, sizeof(lookup))) != 0)
- goto out;
- if (lookup.version != sizeof(lookup) || SCARG(uap, cmd) != KLDSYM_LOOKUP) {
- error = EINVAL;
- goto out;
- }
-
- symstr = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
- if ((error = copyinstr(lookup.symname, symstr, MAXPATHLEN, NULL)) != 0)
- goto out;
-
- if (SCARG(uap, fileid) != 0) {
- lf = linker_find_file_by_id(SCARG(uap, fileid));
- if (lf == NULL) {
- error = ENOENT;
- goto out;
+ char *symstr = NULL;
+ c_linker_sym_t sym;
+ linker_symval_t symval;
+ linker_file_t lf;
+ struct kld_sym_lookup lookup;
+ int error = 0;
+
+ mtx_lock(&Giant);
+
+ if ((error = copyin(SCARG(uap, data), &lookup, sizeof(lookup))) != 0)
+ goto out;
+ if (lookup.version != sizeof(lookup) ||
+ SCARG(uap, cmd) != KLDSYM_LOOKUP) {
+ error = EINVAL;
+ goto out;
}
- if (LINKER_LOOKUP_SYMBOL(lf, symstr, &sym) == 0 &&
- LINKER_SYMBOL_VALUES(lf, sym, &symval) == 0) {
- lookup.symvalue = (uintptr_t)symval.value;
- lookup.symsize = symval.size;
- error = copyout(&lookup, SCARG(uap, data), sizeof(lookup));
- } else
- error = ENOENT;
- } else {
- TAILQ_FOREACH(lf, &linker_files, link) {
- if (LINKER_LOOKUP_SYMBOL(lf, symstr, &sym) == 0 &&
- LINKER_SYMBOL_VALUES(lf, sym, &symval) == 0) {
- lookup.symvalue = (uintptr_t)symval.value;
- lookup.symsize = symval.size;
- error = copyout(&lookup, SCARG(uap, data), sizeof(lookup));
- break;
- }
+
+ symstr = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
+ if ((error = copyinstr(lookup.symname, symstr, MAXPATHLEN, NULL)) != 0)
+ goto out;
+ if (SCARG(uap, fileid) != 0) {
+ lf = linker_find_file_by_id(SCARG(uap, fileid));
+ if (lf == NULL) {
+ error = ENOENT;
+ goto out;
+ }
+ if (LINKER_LOOKUP_SYMBOL(lf, symstr, &sym) == 0 &&
+ LINKER_SYMBOL_VALUES(lf, sym, &symval) == 0) {
+ lookup.symvalue = (uintptr_t) symval.value;
+ lookup.symsize = symval.size;
+ error = copyout(&lookup, SCARG(uap, data),
+ sizeof(lookup));
+ } else
+ error = ENOENT;
+ } else {
+ TAILQ_FOREACH(lf, &linker_files, link) {
+ if (LINKER_LOOKUP_SYMBOL(lf, symstr, &sym) == 0 &&
+ LINKER_SYMBOL_VALUES(lf, sym, &symval) == 0) {
+ lookup.symvalue = (uintptr_t)symval.value;
+ lookup.symsize = symval.size;
+ error = copyout(&lookup, SCARG(uap, data),
+ sizeof(lookup));
+ break;
+ }
+ }
+ if (lf == NULL)
+ error = ENOENT;
}
- if (!lf)
- error = ENOENT;
- }
out:
- if (symstr)
- free(symstr, M_TEMP);
- mtx_unlock(&Giant);
- return (error);
+ if (symstr)
+ free(symstr, M_TEMP);
+ mtx_unlock(&Giant);
+ return (error);
}
/*
@@ -988,52 +982,56 @@ out:
static modlist_t
modlist_lookup(const char *name, int ver)
{
- modlist_t mod;
+ modlist_t mod;
+ int err;
- TAILQ_FOREACH(mod, &found_modules, link) {
- if (strcmp(mod->name, name) == 0 && (ver == 0 || mod->version == ver))
- return mod;
- }
- return NULL;
+ TAILQ_FOREACH(mod, &found_modules, link) {
+ err = strcmp(mod->name, name);
+ if (err == 0 && (ver == 0 || mod->version == ver))
+ return (mod);
+ }
+ return (NULL);
}
static modlist_t
modlist_lookup2(const char *name, struct mod_depend *verinfo)
{
- modlist_t mod, bestmod;
- int ver;
-
- if (verinfo == NULL)
- return modlist_lookup(name, 0);
- bestmod = NULL;
- for (mod = TAILQ_FIRST(&found_modules); mod; mod = TAILQ_NEXT(mod, link)) {
- if (strcmp(mod->name, name) != 0)
- continue;
- ver = mod->version;
- if (ver == verinfo->md_ver_preferred)
- return mod;
- if (ver >= verinfo->md_ver_minimum &&
- ver <= verinfo->md_ver_maximum &&
- ver > bestmod->version)
- bestmod = mod;
- }
- return bestmod;
+ modlist_t mod, bestmod;
+ int err, ver;
+
+ if (verinfo == NULL)
+ return (modlist_lookup(name, 0));
+ bestmod = NULL;
+ for (mod = TAILQ_FIRST(&found_modules); mod;
+ mod = TAILQ_NEXT(mod, link)) {
+ err = strcmp(mod->name, name);
+ if (err != 0)
+ continue;
+ ver = mod->version;
+ if (ver == verinfo->md_ver_preferred)
+ return (mod);
+ if (ver >= verinfo->md_ver_minimum &&
+ ver <= verinfo->md_ver_maximum &&
+ ver > bestmod->version)
+ bestmod = mod;
+ }
+ return (bestmod);
}
static modlist_t
modlist_newmodule(const char *modname, int version, linker_file_t container)
{
- modlist_t mod;
-
- mod = malloc(sizeof(struct modlist), M_LINKER, M_NOWAIT);
- if (mod == NULL)
- panic("no memory for module list");
- bzero(mod, sizeof(*mod));
- mod->container = container;
- mod->name = modname;
- mod->version = version;
- TAILQ_INSERT_TAIL(&found_modules, mod, link);
- return mod;
+ modlist_t mod;
+
+ mod = malloc(sizeof(struct modlist), M_LINKER, M_NOWAIT);
+ if (mod == NULL)
+ panic("no memory for module list");
+ bzero(mod, sizeof(*mod));
+ mod->container = container;
+ mod->name = modname;
+ mod->version = version;
+ TAILQ_INSERT_TAIL(&found_modules, mod, link);
+ return (mod);
}
/*
@@ -1042,7 +1040,7 @@ modlist_newmodule(const char *modname, int version, linker_file_t container)
static void *
linker_reloc_ptr(linker_file_t lf, const void *offset)
{
- return lf->address + (uintptr_t)offset;
+ return (lf->address + (uintptr_t)offset);
}
/*
@@ -1050,16 +1048,16 @@ linker_reloc_ptr(linker_file_t lf, const void *offset)
*/
static void
linker_mdt_version(linker_file_t lf, struct mod_metadata *mp,
- const char **modname, int *version)
+ const char **modname, int *version)
{
- struct mod_version *mvp;
-
- if (modname)
- *modname = linker_reloc_ptr(lf, mp->md_cval);
- if (version) {
- mvp = linker_reloc_ptr(lf, mp->md_data);
- *version = mvp->mv_version;
- }
+ struct mod_version *mvp;
+
+ if (modname)
+ *modname = linker_reloc_ptr(lf, mp->md_cval);
+ if (version) {
+ mvp = linker_reloc_ptr(lf, mp->md_data);
+ *version = mvp->mv_version;
+ }
}
/*
@@ -1067,233 +1065,254 @@ linker_mdt_version(linker_file_t lf, struct mod_metadata *mp,
*/
static void
linker_mdt_depend(linker_file_t lf, struct mod_metadata *mp,
- const char **modname, struct mod_depend **verinfo)
+ const char **modname, struct mod_depend **verinfo)
{
- if (modname)
- *modname = linker_reloc_ptr(lf, mp->md_cval);
- if (verinfo)
- *verinfo = linker_reloc_ptr(lf, mp->md_data);
+ if (modname)
+ *modname = linker_reloc_ptr(lf, mp->md_cval);
+ if (verinfo)
+ *verinfo = linker_reloc_ptr(lf, mp->md_data);
}
static void
linker_addmodules(linker_file_t lf, struct mod_metadata **start,
- struct mod_metadata **stop, int preload)
+ struct mod_metadata **stop, int preload)
{
- struct mod_metadata *mp, **mdp;
- const char *modname;
- int ver;
-
- for (mdp = start; mdp < stop; mdp++) {
- if (preload)
- mp = *mdp;
- else
- mp = linker_reloc_ptr(lf, *mdp);
- if (mp->md_type != MDT_VERSION)
- continue;
- if (preload) {
- modname = mp->md_cval;
- ver = ((struct mod_version*)mp->md_data)->mv_version;
- } else
- linker_mdt_version(lf, mp, &modname, &ver);
- if (modlist_lookup(modname, ver) != NULL) {
- printf("module %s already present!\n", modname);
- /* XXX what can we do? this is a build error. :-( */
- continue;
+ struct mod_metadata *mp, **mdp;
+ const char *modname;
+ int ver;
+
+ for (mdp = start; mdp < stop; mdp++) {
+ if (preload)
+ mp = *mdp;
+ else
+ mp = linker_reloc_ptr(lf, *mdp);
+ if (mp->md_type != MDT_VERSION)
+ continue;
+ if (preload) {
+ modname = mp->md_cval;
+ ver = ((struct mod_version *)mp->md_data)->mv_version;
+ } else
+ linker_mdt_version(lf, mp, &modname, &ver);
+ if (modlist_lookup(modname, ver) != NULL) {
+ printf("module %s already present!\n", modname);
+ /* XXX what can we do? this is a build error. :-( */
+ continue;
+ }
+ modlist_newmodule(modname, ver, lf);
}
- modlist_newmodule(modname, ver, lf);
- }
}
static void
-linker_preload(void* arg)
+linker_preload(void *arg)
{
- caddr_t modptr;
- const char *modname, *nmodname;
- char *modtype;
- linker_file_t lf;
- linker_class_t lc;
- int error;
- linker_file_list_t loaded_files;
- linker_file_list_t depended_files;
- struct mod_metadata *mp, *nmp;
- struct mod_metadata **start, **stop, **mdp, **nmdp;
- struct mod_depend *verinfo;
- int nver;
- int resolves;
- modlist_t mod;
- struct sysinit **si_start, **si_stop;
-
- TAILQ_INIT(&loaded_files);
- TAILQ_INIT(&depended_files);
- TAILQ_INIT(&found_modules);
- error = 0;
-
- modptr = NULL;
- while ((modptr = preload_search_next_name(modptr)) != NULL) {
- modname = (char *)preload_search_info(modptr, MODINFO_NAME);
- modtype = (char *)preload_search_info(modptr, MODINFO_TYPE);
- if (modname == NULL) {
- printf("Preloaded module at %p does not have a name!\n", modptr);
- continue;
- }
- if (modtype == NULL) {
- printf("Preloaded module at %p does not have a type!\n", modptr);
- continue;
- }
- printf("Preloaded %s \"%s\" at %p.\n", modtype, modname, modptr);
- lf = NULL;
- TAILQ_FOREACH(lc, &classes, link) {
- error = LINKER_LINK_PRELOAD(lc, modname, &lf);
- if (error) {
- lf = NULL;
- break;
- }
- }
- if (lf)
- TAILQ_INSERT_TAIL(&loaded_files, lf, loaded);
- }
-
- /*
- * First get a list of stuff in the kernel.
- */
- if (linker_file_lookup_set(linker_kernel_file, MDT_SETNAME, &start, &stop,
- NULL) == 0)
- linker_addmodules(linker_kernel_file, start, stop, 1);
-
- /*
- * this is a once-off kinky bubble sort
- * resolve relocation dependency requirements
- */
-restart:
- TAILQ_FOREACH(lf, &loaded_files, loaded) {
- error = linker_file_lookup_set(lf, MDT_SETNAME, &start, &stop, NULL);
- /*
- * First, look to see if we would successfully link with this stuff.
- */
- resolves = 1; /* unless we know otherwise */
- if (!error) {
- for (mdp = start; mdp < stop; mdp++) {
- mp = linker_reloc_ptr(lf, *mdp);
- if (mp->md_type != MDT_DEPEND)
- continue;
- linker_mdt_depend(lf, mp, &modname, &verinfo);
- for (nmdp = start; nmdp < stop; nmdp++) {
- nmp = linker_reloc_ptr(lf, *nmdp);
- if (nmp->md_type != MDT_VERSION)
+ caddr_t modptr;
+ const char *modname, *nmodname;
+ char *modtype;
+ linker_file_t lf;
+ linker_class_t lc;
+ int error;
+ linker_file_list_t loaded_files;
+ linker_file_list_t depended_files;
+ struct mod_metadata *mp, *nmp;
+ struct mod_metadata **start, **stop, **mdp, **nmdp;
+ struct mod_depend *verinfo;
+ int nver;
+ int resolves;
+ modlist_t mod;
+ struct sysinit **si_start, **si_stop;
+
+ TAILQ_INIT(&loaded_files);
+ TAILQ_INIT(&depended_files);
+ TAILQ_INIT(&found_modules);
+ error = 0;
+
+ modptr = NULL;
+ while ((modptr = preload_search_next_name(modptr)) != NULL) {
+ modname = (char *)preload_search_info(modptr, MODINFO_NAME);
+ modtype = (char *)preload_search_info(modptr, MODINFO_TYPE);
+ if (modname == NULL) {
+ printf("Preloaded module at %p does not have a"
+ " name!\n", modptr);
+ continue;
+ }
+ if (modtype == NULL) {
+ printf("Preloaded module at %p does not have a type!\n",
+ modptr);
continue;
- linker_mdt_version(lf, nmp, &nmodname, NULL);
- nmodname = linker_reloc_ptr(lf, nmp->md_cval);
- if (strcmp(modname, nmodname) == 0)
- break;
}
- if (nmdp < stop) /* it's a self reference */
- continue;
- if (modlist_lookup2(modname, verinfo) == NULL) {
- /* ok, the module isn't here yet, we are not finished */
- resolves = 0;
+ printf("Preloaded %s \"%s\" at %p.\n", modtype, modname,
+ modptr);
+ lf = NULL;
+ TAILQ_FOREACH(lc, &classes, link) {
+ error = LINKER_LINK_PRELOAD(lc, modname, &lf);
+ if (error) {
+ lf = NULL;
+ break;
+ }
}
- }
+ if (lf)
+ TAILQ_INSERT_TAIL(&loaded_files, lf, loaded);
}
+
/*
- * OK, if we found our modules, we can link. So, "provide" the
- * modules inside and add it to the end of the link order list.
+ * First get a list of stuff in the kernel.
*/
- if (resolves) {
- if (!error) {
- for (mdp = start; mdp < stop; mdp++) {
- mp = linker_reloc_ptr(lf, *mdp);
- if (mp->md_type != MDT_VERSION)
- continue;
- linker_mdt_version(lf, mp, &modname, &nver);
- if (modlist_lookup(modname, nver) != NULL) {
- printf("module %s already present!\n", modname);
- linker_file_unload(lf);
+ if (linker_file_lookup_set(linker_kernel_file, MDT_SETNAME, &start,
+ &stop, NULL) == 0)
+ linker_addmodules(linker_kernel_file, start, stop, 1);
+
+ /*
+ * this is a once-off kinky bubble sort resolve relocation dependency
+ * requirements
+ */
+restart:
+ TAILQ_FOREACH(lf, &loaded_files, loaded) {
+ error = linker_file_lookup_set(lf, MDT_SETNAME, &start,
+ &stop, NULL);
+ /*
+ * First, look to see if we would successfully link with this
+ * stuff.
+ */
+ resolves = 1; /* unless we know otherwise */
+ if (!error) {
+ for (mdp = start; mdp < stop; mdp++) {
+ mp = linker_reloc_ptr(lf, *mdp);
+ if (mp->md_type != MDT_DEPEND)
+ continue;
+ linker_mdt_depend(lf, mp, &modname, &verinfo);
+ for (nmdp = start; nmdp < stop; nmdp++) {
+ nmp = linker_reloc_ptr(lf, *nmdp);
+ if (nmp->md_type != MDT_VERSION)
+ continue;
+ linker_mdt_version(lf, nmp, &nmodname,
+ NULL);
+ nmodname = linker_reloc_ptr(lf,
+ nmp->md_cval);
+ error = strcmp(modname, nmodname);
+ if (error == 0)
+ break;
+ }
+ if (nmdp < stop) /* it's a self reference */
+ continue;
+
+ /*
+ * ok, the module isn't here yet, we
+ * are not finished
+ */
+ if (modlist_lookup2(modname, verinfo) == NULL)
+ resolves = 0;
+ }
+ }
+ /*
+ * OK, if we found our modules, we can link. So, "provide"
+ * the modules inside and add it to the end of the link order
+ * list.
+ */
+ if (resolves) {
+ if (!error) {
+ for (mdp = start; mdp < stop; mdp++) {
+ mp = linker_reloc_ptr(lf, *mdp);
+ if (mp->md_type != MDT_VERSION)
+ continue;
+ linker_mdt_version(lf, mp,
+ &modname, &nver);
+ if (modlist_lookup(modname,
+ nver) != NULL) {
+ printf("module %s already"
+ " present!\n", modname);
+ linker_file_unload(lf);
+ TAILQ_REMOVE(&loaded_files,
+ lf, loaded);
+ /* we changed tailq next ptr */
+ goto restart;
+ }
+ modlist_newmodule(modname, nver, lf);
+ }
+ }
TAILQ_REMOVE(&loaded_files, lf, loaded);
- goto restart; /* we changed the tailq next ptr */
- }
- modlist_newmodule(modname, nver, lf);
+ TAILQ_INSERT_TAIL(&depended_files, lf, loaded);
+ /*
+ * Since we provided modules, we need to restart the
+ * sort so that the previous files that depend on us
+ * have a chance. Also, we've busted the tailq next
+ * pointer with the REMOVE.
+ */
+ goto restart;
}
- }
- TAILQ_REMOVE(&loaded_files, lf, loaded);
- TAILQ_INSERT_TAIL(&depended_files, lf, loaded);
- /*
- * Since we provided modules, we need to restart the sort so
- * that the previous files that depend on us have a chance.
- * Also, we've busted the tailq next pointer with the REMOVE.
- */
- goto restart;
- }
- }
-
- /*
- * At this point, we check to see what could not be resolved..
- */
- TAILQ_FOREACH(lf, &loaded_files, loaded) {
- printf("KLD file %s is missing dependencies\n", lf->filename);
- linker_file_unload(lf);
- TAILQ_REMOVE(&loaded_files, lf, loaded);
- }
-
- /*
- * We made it. Finish off the linking in the order we determined.
- */
- TAILQ_FOREACH(lf, &depended_files, loaded) {
- if (linker_kernel_file) {
- linker_kernel_file->refs++;
- error = linker_file_add_dependency(lf, linker_kernel_file);
- if (error)
- panic("cannot add dependency");
- }
- lf->userrefs++; /* so we can (try to) kldunload it */
- error = linker_file_lookup_set(lf, MDT_SETNAME, &start, &stop, NULL);
- if (!error) {
- for (mdp = start; mdp < stop; mdp++) {
- mp = linker_reloc_ptr(lf, *mdp);
- if (mp->md_type != MDT_DEPEND)
- continue;
- linker_mdt_depend(lf, mp, &modname, &verinfo);
- mod = modlist_lookup2(modname, verinfo);
- mod->container->refs++;
- error = linker_file_add_dependency(lf, mod->container);
- if (error)
- panic("cannot add dependency");
- }
}
/*
- * Now do relocation etc using the symbol search paths established by
- * the dependencies
+ * At this point, we check to see what could not be resolved..
*/
- error = LINKER_LINK_PRELOAD_FINISH(lf);
- if (error) {
- printf("KLD file %s - could not finalize loading\n", lf->filename);
- linker_file_unload(lf);
- continue;
+ TAILQ_FOREACH(lf, &loaded_files, loaded) {
+ printf("KLD file %s is missing dependencies\n", lf->filename);
+ linker_file_unload(lf);
+ TAILQ_REMOVE(&loaded_files, lf, loaded);
}
- linker_file_register_modules(lf);
- if (linker_file_lookup_set(lf, "sysinit_set", &si_start, &si_stop, NULL) == 0)
- sysinit_add(si_start, si_stop);
- linker_file_register_sysctls(lf);
- lf->flags |= LINKER_FILE_LINKED;
- }
- /* woohoo! we made it! */
+ /*
+ * We made it. Finish off the linking in the order we determined.
+ */
+ TAILQ_FOREACH(lf, &depended_files, loaded) {
+ if (linker_kernel_file) {
+ linker_kernel_file->refs++;
+ error = linker_file_add_dependency(lf,
+ linker_kernel_file);
+ if (error)
+ panic("cannot add dependency");
+ }
+ lf->userrefs++; /* so we can (try to) kldunload it */
+ error = linker_file_lookup_set(lf, MDT_SETNAME, &start,
+ &stop, NULL);
+ if (!error) {
+ for (mdp = start; mdp < stop; mdp++) {
+ mp = linker_reloc_ptr(lf, *mdp);
+ if (mp->md_type != MDT_DEPEND)
+ continue;
+ linker_mdt_depend(lf, mp, &modname, &verinfo);
+ mod = modlist_lookup2(modname, verinfo);
+ mod->container->refs++;
+ error = linker_file_add_dependency(lf,
+ mod->container);
+ if (error)
+ panic("cannot add dependency");
+ }
+ }
+ /*
+ * Now do relocation etc using the symbol search paths
+ * established by the dependencies
+ */
+ error = LINKER_LINK_PRELOAD_FINISH(lf);
+ if (error) {
+ printf("KLD file %s - could not finalize loading\n",
+ lf->filename);
+ linker_file_unload(lf);
+ continue;
+ }
+ linker_file_register_modules(lf);
+ if (linker_file_lookup_set(lf, "sysinit_set", &si_start,
+ &si_stop, NULL) == 0)
+ sysinit_add(si_start, si_stop);
+ linker_file_register_sysctls(lf);
+ lf->flags |= LINKER_FILE_LINKED;
+ }
+ /* woohoo! we made it! */
}
-SYSINIT(preload, SI_SUB_KLD, SI_ORDER_MIDDLE, linker_preload, 0);
+SYSINIT(preload, SI_SUB_KLD, SI_ORDER_MIDDLE, linker_preload, 0)
/*
* Search for a not-loaded module by name.
- *
+ *
* Modules may be found in the following locations:
- *
- * - preloaded (result is just the module name)
- * - on disk (result is full path to module)
- *
- * If the module name is qualified in any way (contains path, etc.)
- * the we simply return a copy of it.
- *
+ *
+ * - preloaded (result is just the module name) - on disk (result is full path
+ * to module)
+ *
+ * If the module name is qualified in any way (contains path, etc.) the we
+ * simply return a copy of it.
+ *
* The search path can be manipulated via sysctl. Note that we use the ';'
* character as a separator to be consistent with the bootloader.
*/
@@ -1302,7 +1321,7 @@ static char linker_hintfile[] = "linker.hints";
static char linker_path[MAXPATHLEN] = "/boot/kernel;/boot/modules;/modules";
SYSCTL_STRING(_kern, OID_AUTO, module_path, CTLFLAG_RW, linker_path,
- sizeof(linker_path), "module load search path");
+ sizeof(linker_path), "module load search path");
TUNABLE_STR("module_path", linker_path, sizeof(linker_path));
@@ -1313,189 +1332,192 @@ static char *linker_ext_list[] = {
};
/*
- * Check if file actually exists either with or without extension listed
- * in the linker_ext_list.
- * (probably should be generic for the rest of the kernel)
+ * Check if file actually exists either with or without extension listed in
+ * the linker_ext_list. (probably should be generic for the rest of the
+ * kernel)
*/
static char *
-linker_lookup_file(const char *path, int pathlen,
- const char *name, int namelen, struct vattr *vap)
+linker_lookup_file(const char *path, int pathlen, const char *name,
+ int namelen, struct vattr *vap)
{
- struct nameidata nd;
- struct thread *td = curthread; /* XXX */
- char *result, **cpp, *sep;
- int error, len, extlen, reclen, flags;
- enum vtype type;
-
- extlen = 0;
- for (cpp = linker_ext_list; *cpp; cpp++) {
- len = strlen(*cpp);
- if (len > extlen)
- extlen = len;
- }
- extlen++; /* trailing '\0' */
- sep = (path[pathlen - 1] != '/') ? "/" : "";
-
- reclen = pathlen + strlen(sep) + namelen + extlen + 1;
- result = malloc(reclen, M_LINKER, M_WAITOK);
- for (cpp = linker_ext_list; *cpp; cpp++) {
- snprintf(result, reclen, "%.*s%s%.*s%s", pathlen, path, sep,
- namelen, name, *cpp);
- /*
- * Attempt to open the file, and return the path if we succeed
- * and it's a regular file.
- */
- NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, result, td);
- flags = FREAD;
- error = vn_open(&nd, &flags, 0);
- if (error == 0) {
- NDFREE(&nd, NDF_ONLY_PNBUF);
- type = nd.ni_vp->v_type;
- if (vap)
- VOP_GETATTR(nd.ni_vp, vap, td->td_proc->p_ucred, td);
- VOP_UNLOCK(nd.ni_vp, 0, td);
- vn_close(nd.ni_vp, FREAD, td->td_proc->p_ucred, td);
- if (type == VREG)
- return(result);
+ struct nameidata nd;
+ struct thread *td = curthread; /* XXX */
+ char *result, **cpp, *sep;
+ int error, len, extlen, reclen, flags;
+ enum vtype type;
+
+ extlen = 0;
+ for (cpp = linker_ext_list; *cpp; cpp++) {
+ len = strlen(*cpp);
+ if (len > extlen)
+ extlen = len;
}
- }
- free(result, M_LINKER);
- return(NULL);
+ extlen++; /* trailing '\0' */
+ sep = (path[pathlen - 1] != '/') ? "/" : "";
+
+ reclen = pathlen + strlen(sep) + namelen + extlen + 1;
+ result = malloc(reclen, M_LINKER, M_WAITOK);
+ for (cpp = linker_ext_list; *cpp; cpp++) {
+ snprintf(result, reclen, "%.*s%s%.*s%s", pathlen, path, sep,
+ namelen, name, *cpp);
+ /*
+ * Attempt to open the file, and return the path if
+ * we succeed and it's a regular file.
+ */
+ NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, result, td);
+ flags = FREAD;
+ error = vn_open(&nd, &flags, 0);
+ if (error == 0) {
+ NDFREE(&nd, NDF_ONLY_PNBUF);
+ type = nd.ni_vp->v_type;
+ if (vap)
+ VOP_GETATTR(nd.ni_vp, vap,
+ td->td_proc->p_ucred, td);
+ VOP_UNLOCK(nd.ni_vp, 0, td);
+ vn_close(nd.ni_vp, FREAD, td->td_proc->p_ucred, td);
+ if (type == VREG)
+ return (result);
+ }
+ }
+ free(result, M_LINKER);
+ return (NULL);
}
-#define INT_ALIGN(base, ptr) ptr = \
+#define INT_ALIGN(base, ptr) ptr = \
(base) + (((ptr) - (base) + sizeof(int) - 1) & ~(sizeof(int) - 1))
/*
- * Lookup KLD which contains requested module in the "linker.hints" file.
- * If version specification is available, then try to find the best KLD.
+ * Lookup KLD which contains requested module in the "linker.hints" file. If
+ * version specification is available, then try to find the best KLD.
* Otherwise just find the latest one.
- *
+ *
* XXX: Vnode locking here is hosed; lock should be held for calls to
* VOP_GETATTR() and vn_rdwr().
*/
static char *
-linker_hints_lookup(const char *path, int pathlen,
- const char *modname, int modnamelen,
- struct mod_depend *verinfo)
+linker_hints_lookup(const char *path, int pathlen, const char *modname,
+ int modnamelen, struct mod_depend *verinfo)
{
- struct thread *td = curthread; /* XXX */
- struct ucred *cred = td ? td->td_proc->p_ucred : NULL;
- struct nameidata nd;
- struct vattr vattr, mattr;
- u_char *hints = NULL;
- u_char *cp, *recptr, *bufend, *result, *best, *pathbuf, *sep;
- int error, ival, bestver, *intp, reclen, found, flags, clen, blen;
-
- result = NULL;
- bestver = found = 0;
-
- sep = (path[pathlen - 1] != '/') ? "/" : "";
- reclen = imax(modnamelen, strlen(linker_hintfile)) + pathlen +
- strlen(sep) + 1;
- pathbuf = malloc(reclen, M_LINKER, M_WAITOK);
- snprintf(pathbuf, reclen, "%.*s%s%s", pathlen, path, sep, linker_hintfile);
-
- NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, pathbuf, td);
- flags = FREAD;
- error = vn_open(&nd, &flags, 0);
- if (error)
- goto bad;
- NDFREE(&nd, NDF_ONLY_PNBUF);
- VOP_UNLOCK(nd.ni_vp, 0, td);
- if (nd.ni_vp->v_type != VREG)
- goto bad;
- best = cp = NULL;
- error = VOP_GETATTR(nd.ni_vp, &vattr, cred, td);
- if (error)
- goto bad;
- /*
- * XXX: we need to limit this number to some reasonable value
- */
- if (vattr.va_size > 100 * 1024) {
- printf("hints file too large %ld\n", (long)vattr.va_size);
- goto bad;
- }
- hints = malloc(vattr.va_size, M_TEMP, M_WAITOK);
- if (hints == NULL)
- goto bad;
- error = vn_rdwr(UIO_READ, nd.ni_vp, (caddr_t)hints, vattr.va_size, 0,
- UIO_SYSSPACE, IO_NODELOCKED, cred, &reclen, td);
- if (error)
- goto bad;
- vn_close(nd.ni_vp, FREAD, cred, td);
- nd.ni_vp = NULL;
- if (reclen != 0) {
- printf("can't read %d\n", reclen);
- goto bad;
- }
- intp = (int*)hints;
- ival = *intp++;
- if (ival != LINKER_HINTS_VERSION) {
- printf("hints file version mismatch %d\n", ival);
- goto bad;
- }
- bufend = hints + vattr.va_size;
- recptr = (u_char*)intp;
- clen = blen = 0;
- while (recptr < bufend && !found) {
- intp = (int*)recptr;
- reclen = *intp++;
+ struct thread *td = curthread; /* XXX */
+ struct ucred *cred = td ? td->td_proc->p_ucred : NULL;
+ struct nameidata nd;
+ struct vattr vattr, mattr;
+ u_char *hints = NULL;
+ u_char *cp, *recptr, *bufend, *result, *best, *pathbuf, *sep;
+ int error, ival, bestver, *intp, reclen, found, flags, clen, blen;
+
+ result = NULL;
+ bestver = found = 0;
+
+ sep = (path[pathlen - 1] != '/') ? "/" : "";
+ reclen = imax(modnamelen, strlen(linker_hintfile)) + pathlen +
+ strlen(sep) + 1;
+ pathbuf = malloc(reclen, M_LINKER, M_WAITOK);
+ snprintf(pathbuf, reclen, "%.*s%s%s", pathlen, path, sep,
+ linker_hintfile);
+
+ NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, pathbuf, td);
+ flags = FREAD;
+ error = vn_open(&nd, &flags, 0);
+ if (error)
+ goto bad;
+ NDFREE(&nd, NDF_ONLY_PNBUF);
+ VOP_UNLOCK(nd.ni_vp, 0, td);
+ if (nd.ni_vp->v_type != VREG)
+ goto bad;
+ best = cp = NULL;
+ error = VOP_GETATTR(nd.ni_vp, &vattr, cred, td);
+ if (error)
+ goto bad;
+ /*
+ * XXX: we need to limit this number to some reasonable value
+ */
+ if (vattr.va_size > 100 * 1024) {
+ printf("hints file too large %ld\n", (long)vattr.va_size);
+ goto bad;
+ }
+ hints = malloc(vattr.va_size, M_TEMP, M_WAITOK);
+ if (hints == NULL)
+ goto bad;
+ error = vn_rdwr(UIO_READ, nd.ni_vp, (caddr_t) hints, vattr.va_size, 0,
+ UIO_SYSSPACE, IO_NODELOCKED, cred, &reclen, td);
+ if (error)
+ goto bad;
+ vn_close(nd.ni_vp, FREAD, cred, td);
+ nd.ni_vp = NULL;
+ if (reclen != 0) {
+ printf("can't read %d\n", reclen);
+ goto bad;
+ }
+ intp = (int *)hints;
ival = *intp++;
- cp = (char*)intp;
- switch (ival) {
- case MDT_VERSION:
- clen = *cp++;
- if (clen != modnamelen || bcmp(cp, modname, clen) != 0)
- break;
- cp += clen;
- INT_ALIGN(hints, cp);
- ival = *(int*)cp;
- cp += sizeof(int);
- clen = *cp++;
- if (verinfo == NULL || ival == verinfo->md_ver_preferred) {
- found = 1;
- break;
- }
- if (ival >= verinfo->md_ver_minimum &&
- ival <= verinfo->md_ver_maximum &&
- ival > bestver) {
- bestver = ival;
- best = cp;
- blen = clen;
- }
- break;
- default:
- break;
+ if (ival != LINKER_HINTS_VERSION) {
+ printf("hints file version mismatch %d\n", ival);
+ goto bad;
+ }
+ bufend = hints + vattr.va_size;
+ recptr = (u_char *)intp;
+ clen = blen = 0;
+ while (recptr < bufend && !found) {
+ intp = (int *)recptr;
+ reclen = *intp++;
+ ival = *intp++;
+ cp = (char *)intp;
+ switch (ival) {
+ case MDT_VERSION:
+ clen = *cp++;
+ if (clen != modnamelen || bcmp(cp, modname, clen) != 0)
+ break;
+ cp += clen;
+ INT_ALIGN(hints, cp);
+ ival = *(int *)cp;
+ cp += sizeof(int);
+ clen = *cp++;
+ if (verinfo == NULL ||
+ ival == verinfo->md_ver_preferred) {
+ found = 1;
+ break;
+ }
+ if (ival >= verinfo->md_ver_minimum &&
+ ival <= verinfo->md_ver_maximum &&
+ ival > bestver) {
+ bestver = ival;
+ best = cp;
+ blen = clen;
+ }
+ break;
+ default:
+ break;
+ }
+ recptr += reclen + sizeof(int);
}
- recptr += reclen + sizeof(int);
- }
- /*
- * Finally check if KLD is in the place
- */
- if (found)
- result = linker_lookup_file(path, pathlen, cp, clen, &mattr);
- else if (best)
- result = linker_lookup_file(path, pathlen, best, blen, &mattr);
- if (result && timespeccmp(&mattr.va_mtime, &vattr.va_mtime, >)) {
/*
- * KLD is newer than hints file. What we should do now ?
+ * Finally check if KLD is in the place
*/
- printf("warning: KLD '%s' is newer than the linker.hints file\n",
- result);
- }
+ if (found)
+ result = linker_lookup_file(path, pathlen, cp, clen, &mattr);
+ else if (best)
+ result = linker_lookup_file(path, pathlen, best, blen, &mattr);
+
+ /*
+ * KLD is newer than hints file. What we should do now?
+ */
+ if (result && timespeccmp(&mattr.va_mtime, &vattr.va_mtime, >))
+ printf("warning: KLD '%s' is newer than the linker.hints"
+ " file\n", result);
bad:
- if (hints)
- free(hints, M_TEMP);
- if (nd.ni_vp != NULL)
- vn_close(nd.ni_vp, FREAD, cred, td);
- /*
- * If nothing found or hints is absent - fallback to the old way
- * by using "kldname[.ko]" as module name.
- */
- if (!found && !bestver && result == NULL)
- result = linker_lookup_file(path, pathlen, modname, modnamelen, NULL);
- return result;
+ if (hints)
+ free(hints, M_TEMP);
+ if (nd.ni_vp != NULL)
+ vn_close(nd.ni_vp, FREAD, cred, td);
+ /*
+ * If nothing found or hints is absent - fallback to the old
+ * way by using "kldname[.ko]" as module name.
+ */
+ if (!found && !bestver && result == NULL)
+ result = linker_lookup_file(path, pathlen, modname,
+ modnamelen, NULL);
+ return (result);
}
/*
@@ -1503,25 +1525,24 @@ bad:
*/
static char *
linker_search_module(const char *modname, int modnamelen,
- struct mod_depend *verinfo)
+ struct mod_depend *verinfo)
{
- char *cp, *ep, *result;
-
- /*
- * traverse the linker path
- */
- for (cp = linker_path; *cp; cp = ep + 1) {
-
- /* find the end of this component */
- for (ep = cp; (*ep != 0) && (*ep != ';'); ep++)
- ;
- result = linker_hints_lookup(cp, ep - cp, modname, modnamelen, verinfo);
- if (result != NULL)
- return(result);
- if (*ep == 0)
- break;
- }
- return (NULL);
+ char *cp, *ep, *result;
+
+ /*
+ * traverse the linker path
+ */
+ for (cp = linker_path; *cp; cp = ep + 1) {
+ /* find the end of this component */
+ for (ep = cp; (*ep != 0) && (*ep != ';'); ep++);
+ result = linker_hints_lookup(cp, ep - cp, modname,
+ modnamelen, verinfo);
+ if (result != NULL)
+ return (result);
+ if (*ep == 0)
+ break;
+ }
+ return (NULL);
}
/*
@@ -1530,194 +1551,197 @@ linker_search_module(const char *modname, int modnamelen,
static char *
linker_search_kld(const char *name)
{
- char *cp, *ep, *result, **cpp;
- int extlen, len;
-
- /* qualified at all? */
- if (index(name, '/'))
- return(linker_strdup(name));
-
- extlen = 0;
- for (cpp = linker_ext_list; *cpp; cpp++) {
- len = strlen(*cpp);
- if (len > extlen)
- extlen = len;
- }
- extlen++; /* trailing '\0' */
-
- /* traverse the linker path */
- len = strlen(name);
- for (ep = linker_path; *ep; ep++) {
- cp = ep;
- /* find the end of this component */
- for (; *ep != 0 && *ep != ';'; ep++)
- ;
- result = linker_lookup_file(cp, ep - cp, name, len, NULL);
- if (result != NULL)
- return(result);
- }
- return(NULL);
+ char *cp, *ep, *result, **cpp;
+ int extlen, len;
+
+ /* qualified at all? */
+ if (index(name, '/'))
+ return (linker_strdup(name));
+
+ extlen = 0;
+ for (cpp = linker_ext_list; *cpp; cpp++) {
+ len = strlen(*cpp);
+ if (len > extlen)
+ extlen = len;
+ }
+ extlen++; /* trailing '\0' */
+
+ /* traverse the linker path */
+ len = strlen(name);
+ for (ep = linker_path; *ep; ep++) {
+ cp = ep;
+ /* find the end of this component */
+ for (; *ep != 0 && *ep != ';'; ep++);
+ result = linker_lookup_file(cp, ep - cp, name, len, NULL);
+ if (result != NULL)
+ return (result);
+ }
+ return (NULL);
}
static const char *
-linker_basename(const char* path)
+linker_basename(const char *path)
{
- const char *filename;
-
- filename = rindex(path, '/');
- if (filename == NULL)
- return path;
- if (filename[1])
- filename++;
- return filename;
+ const char *filename;
+
+ filename = rindex(path, '/');
+ if (filename == NULL)
+ return path;
+ if (filename[1])
+ filename++;
+ return (filename);
}
/*
- * Find a file which contains given module and load it,
- * if "parent" is not NULL, register a reference to it.
+ * Find a file which contains given module and load it, if "parent" is not
+ * NULL, register a reference to it.
*/
static int
linker_load_module(const char *kldname, const char *modname,
- struct linker_file *parent, struct mod_depend *verinfo,
- struct linker_file **lfpp)
+ struct linker_file *parent, struct mod_depend *verinfo,
+ struct linker_file **lfpp)
{
- linker_file_t lfdep;
- const char *filename;
- char *pathname;
- int error;
+ linker_file_t lfdep;
+ const char *filename;
+ char *pathname;
+ int error;
+
+ if (modname == NULL) {
+ /*
+ * We have to load KLD
+ */
+ KASSERT(verinfo == NULL,
+ ("linker_load_module: verinfo is not NULL"));
+ pathname = linker_search_kld(kldname);
+ } else {
+ if (modlist_lookup2(modname, verinfo) != NULL)
+ return (EEXIST);
+ if (kldname == NULL)
+ /*
+ * Need to find a KLD with required module
+ */
+ pathname = linker_search_module(modname,
+ strlen(modname), verinfo);
+ else
+ pathname = linker_strdup(kldname);
+ }
+ if (pathname == NULL)
+ return (ENOENT);
- if (modname == NULL) {
/*
- * We have to load KLD
+ * Can't load more than one file with the same basename XXX:
+ * Actually it should be possible to have multiple KLDs with
+ * the same basename but different path because they can
+ * provide different versions of the same modules.
*/
- KASSERT(verinfo == NULL, ("linker_load_module: verinfo is not NULL"));
- pathname = linker_search_kld(kldname);
- } else {
- if (modlist_lookup2(modname, verinfo) != NULL)
- return (EEXIST);
- if (kldname == NULL) {
- /*
- * Need to find a KLD with required module
- */
- pathname = linker_search_module(modname, strlen(modname), verinfo);
- } else
- pathname = linker_strdup(kldname);
- }
- if (pathname == NULL)
- return (ENOENT);
-
- /*
- * Can't load more than one file with the same basename
- * XXX: Actually it should be possible to have multiple KLDs
- * with the same basename but different path because they can provide
- * different versions of the same modules.
- */
- filename = linker_basename(pathname);
- if (linker_find_file_by_name(filename)) {
- error = EEXIST;
- goto out;
- }
-
- do {
- error = linker_load_file(pathname, &lfdep);
- if (error)
- break;
- if (modname && verinfo && modlist_lookup2(modname, verinfo) == NULL) {
- linker_file_unload(lfdep);
- error = ENOENT;
- break;
- }
- if (parent) {
- error = linker_file_add_dependency(parent, lfdep);
- if (error)
- break;
+ filename = linker_basename(pathname);
+ if (linker_find_file_by_name(filename)) {
+ error = EEXIST;
+ goto out;
}
- if (lfpp)
- *lfpp = lfdep;
- } while(0);
+ do {
+ error = linker_load_file(pathname, &lfdep);
+ if (error)
+ break;
+ if (modname && verinfo &&
+ modlist_lookup2(modname, verinfo) == NULL) {
+ linker_file_unload(lfdep);
+ error = ENOENT;
+ break;
+ }
+ if (parent) {
+ error = linker_file_add_dependency(parent, lfdep);
+ if (error)
+ break;
+ }
+ if (lfpp)
+ *lfpp = lfdep;
+ } while (0);
out:
- if (pathname)
- free(pathname, M_LINKER);
- return error;
+ if (pathname)
+ free(pathname, M_LINKER);
+ return (error);
}
/*
- * This routine is responsible for finding dependencies of userland
- * initiated kldload(2)'s of files.
+ * This routine is responsible for finding dependencies of userland initiated
+ * kldload(2)'s of files.
*/
int
linker_load_dependencies(linker_file_t lf)
{
- linker_file_t lfdep;
- struct mod_metadata **start, **stop, **mdp, **nmdp;
- struct mod_metadata *mp, *nmp;
- struct mod_depend *verinfo;
- modlist_t mod;
- const char *modname, *nmodname;
- int ver, error = 0, count;
-
- /*
- * All files are dependant on /kernel.
- */
- if (linker_kernel_file) {
- linker_kernel_file->refs++;
- error = linker_file_add_dependency(lf, linker_kernel_file);
- if (error)
- return error;
- }
-
- if (linker_file_lookup_set(lf, MDT_SETNAME, &start, &stop, &count) != 0)
- return 0;
- for (mdp = start; mdp < stop; mdp++) {
- mp = linker_reloc_ptr(lf, *mdp);
- if (mp->md_type != MDT_VERSION)
- continue;
- linker_mdt_version(lf, mp, &modname, &ver);
- mod = modlist_lookup(modname, ver);
- if (mod != NULL) {
- printf("interface %s.%d already present in the KLD '%s'!\n",
- modname, ver, mod->container->filename);
- return EEXIST;
- }
- }
-
- for (mdp = start; mdp < stop; mdp++) {
- mp = linker_reloc_ptr(lf, *mdp);
- if (mp->md_type != MDT_DEPEND)
- continue;
- linker_mdt_depend(lf, mp, &modname, &verinfo);
- nmodname = NULL;
- for (nmdp = start; nmdp < stop; nmdp++) {
- nmp = linker_reloc_ptr(lf, *nmdp);
- if (nmp->md_type != MDT_VERSION)
- continue;
- nmodname = linker_reloc_ptr(lf, nmp->md_cval);
- if (strcmp(modname, nmodname) == 0)
- break;
+ linker_file_t lfdep;
+ struct mod_metadata **start, **stop, **mdp, **nmdp;
+ struct mod_metadata *mp, *nmp;
+ struct mod_depend *verinfo;
+ modlist_t mod;
+ const char *modname, *nmodname;
+ int ver, error = 0, count;
+
+ /*
+ * All files are dependant on /kernel.
+ */
+ if (linker_kernel_file) {
+ linker_kernel_file->refs++;
+ error = linker_file_add_dependency(lf, linker_kernel_file);
+ if (error)
+ return (error);
}
- if (nmdp < stop) /* early exit, it's a self reference */
- continue;
- mod = modlist_lookup2(modname, verinfo);
- if (mod) { /* woohoo, it's loaded already */
- lfdep = mod->container;
- lfdep->refs++;
- error = linker_file_add_dependency(lf, lfdep);
- if (error)
- break;
- continue;
+ if (linker_file_lookup_set(lf, MDT_SETNAME, &start, &stop,
+ &count) != 0)
+ return (0);
+ for (mdp = start; mdp < stop; mdp++) {
+ mp = linker_reloc_ptr(lf, *mdp);
+ if (mp->md_type != MDT_VERSION)
+ continue;
+ linker_mdt_version(lf, mp, &modname, &ver);
+ mod = modlist_lookup(modname, ver);
+ if (mod != NULL) {
+ printf("interface %s.%d already present in the KLD"
+ " '%s'!\n", modname, ver,
+ mod->container->filename);
+ return (EEXIST);
+ }
}
- error = linker_load_module(NULL, modname, lf, verinfo, NULL);
- if (error) {
- printf("KLD %s: depends on %s - not available\n",
- lf->filename, modname);
- break;
+
+ for (mdp = start; mdp < stop; mdp++) {
+ mp = linker_reloc_ptr(lf, *mdp);
+ if (mp->md_type != MDT_DEPEND)
+ continue;
+ linker_mdt_depend(lf, mp, &modname, &verinfo);
+ nmodname = NULL;
+ for (nmdp = start; nmdp < stop; nmdp++) {
+ nmp = linker_reloc_ptr(lf, *nmdp);
+ if (nmp->md_type != MDT_VERSION)
+ continue;
+ nmodname = linker_reloc_ptr(lf, nmp->md_cval);
+ error = strcmp(modname, nmodname);
+ if (error == 0)
+ break;
+ }
+ if (nmdp < stop)/* early exit, it's a self reference */
+ continue;
+ mod = modlist_lookup2(modname, verinfo);
+ if (mod) { /* woohoo, it's loaded already */
+ lfdep = mod->container;
+ lfdep->refs++;
+ error = linker_file_add_dependency(lf, lfdep);
+ if (error)
+ break;
+ continue;
+ }
+ error = linker_load_module(NULL, modname, lf, verinfo, NULL);
+ if (error) {
+ printf("KLD %s: depends on %s - not available\n",
+ lf->filename, modname);
+ break;
+ }
}
- }
- if (error)
- return error;
- linker_addmodules(lf, start, stop, 0);
- return error;
+ if (error)
+ return (error);
+ linker_addmodules(lf, start, stop, 0);
+ return (error);
}
static int
@@ -1749,4 +1773,4 @@ sysctl_kern_function_list(SYSCTL_HANDLER_ARGS)
}
SYSCTL_PROC(_kern, OID_AUTO, function_list, CTLFLAG_RD,
- NULL, 0, sysctl_kern_function_list, "", "kernel function list");
+ NULL, 0, sysctl_kern_function_list, "", "kernel function list");
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