summaryrefslogtreecommitdiffstats
path: root/sys/compat/linux/linux_uid16.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/compat/linux/linux_uid16.c')
-rw-r--r--sys/compat/linux/linux_uid16.c189
1 files changed, 161 insertions, 28 deletions
diff --git a/sys/compat/linux/linux_uid16.c b/sys/compat/linux/linux_uid16.c
index 31950ff..b66fb5c 100644
--- a/sys/compat/linux/linux_uid16.c
+++ b/sys/compat/linux/linux_uid16.c
@@ -28,14 +28,17 @@
__FBSDID("$FreeBSD$");
#include "opt_compat.h"
+#include "opt_kdtrace.h"
#include <sys/fcntl.h>
#include <sys/param.h>
+#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/priv.h>
#include <sys/proc.h>
+#include <sys/sdt.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/systm.h>
@@ -48,8 +51,53 @@ __FBSDID("$FreeBSD$");
#include <machine/../linux/linux_proto.h>
#endif
+#include <compat/linux/linux_dtrace.h>
#include <compat/linux/linux_util.h>
+/* DTrace init */
+LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
+
+/**
+ * DTrace probes in this module.
+ */
+LIN_SDT_PROBE_DEFINE3(uid16, linux_chown16, entry, "char *", "l_uid16_t",
+ "l_gid16_t");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_chown16, conv_path, "char *");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_chown16, return, "int");
+LIN_SDT_PROBE_DEFINE3(uid16, linux_lchown16, entry, "char *", "l_uid16_t",
+ "l_gid16_t");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_lchown16, conv_path, "char *");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_lchown16, return, "int");
+LIN_SDT_PROBE_DEFINE2(uid16, linux_setgroups16, entry, "l_uint", "l_gid16_t *");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setgroups16, copyin_error, "int");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setgroups16, priv_check_cred_error, "int");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setgroups16, return, "int");
+LIN_SDT_PROBE_DEFINE2(uid16, linux_getgroups16, entry, "l_uint", "l_gid16_t *");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_getgroups16, copyout_error, "int");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_getgroups16, return, "int");
+LIN_SDT_PROBE_DEFINE0(uid16, linux_getgid16, entry);
+LIN_SDT_PROBE_DEFINE1(uid16, linux_getgid16, return, "int");
+LIN_SDT_PROBE_DEFINE0(uid16, linux_getuid16, entry);
+LIN_SDT_PROBE_DEFINE1(uid16, linux_getuid16, return, "int");
+LIN_SDT_PROBE_DEFINE0(uid16, linux_getegid16, entry);
+LIN_SDT_PROBE_DEFINE1(uid16, linux_getegid16, return, "int");
+LIN_SDT_PROBE_DEFINE0(uid16, linux_geteuid16, entry);
+LIN_SDT_PROBE_DEFINE1(uid16, linux_geteuid16, return, "int");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setgid16, entry, "l_gid16_t");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setgid16, return, "int");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setuid16, entry, "l_uid16_t");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setuid16, return, "int");
+LIN_SDT_PROBE_DEFINE2(uid16, linux_setregid16, entry, "l_git16_t", "l_git16_t");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setregid16, return, "int");
+LIN_SDT_PROBE_DEFINE2(uid16, linux_setreuid16, entry, "l_uid16_t", "l_uid16_t");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setreuid16, return, "int");
+LIN_SDT_PROBE_DEFINE3(uid16, linux_setresgid16, entry, "l_gid16_t", "l_gid16_t",
+ "l_gid16_t");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setresgid16, return, "int");
+LIN_SDT_PROBE_DEFINE3(uid16, linux_setresuid16, entry, "l_uid16_t", "l_uid16_t",
+ "l_uid16_t");
+LIN_SDT_PROBE_DEFINE1(uid16, linux_setresuid16, return, "int");
+
DUMMY(setfsuid16);
DUMMY(setfsgid16);
DUMMY(getresuid16);
@@ -65,13 +113,20 @@ linux_chown16(struct thread *td, struct linux_chown16_args *args)
LCONVPATHEXIST(td, args->path, &path);
-#ifdef DEBUG
- if (ldebug(chown16))
- printf(ARGS(chown16, "%s, %d, %d"), path, args->uid, args->gid);
-#endif
+ /*
+ * The DTrace probes have to be after the LCONVPATHEXIST, as
+ * LCONVPATHEXIST may return on its own and we do not want to
+ * have a stray entry without the corresponding return.
+ */
+ LIN_SDT_PROBE3(uid16, linux_chown16, entry, args->path, args->uid,
+ args->gid);
+ LIN_SDT_PROBE1(uid16, linux_chown16, conv_path, path);
+
error = kern_chown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
CAST_NOCHG(args->gid));
LFREEPATH(path);
+
+ LIN_SDT_PROBE1(uid16, linux_chown16, return, error);
return (error);
}
@@ -83,14 +138,20 @@ linux_lchown16(struct thread *td, struct linux_lchown16_args *args)
LCONVPATHEXIST(td, args->path, &path);
-#ifdef DEBUG
- if (ldebug(lchown16))
- printf(ARGS(lchown16, "%s, %d, %d"), path, args->uid,
- args->gid);
-#endif
+ /*
+ * The DTrace probes have to be after the LCONVPATHEXIST, as
+ * LCONVPATHEXIST may return on its own and we do not want to
+ * have a stray entry without the corresponding return.
+ */
+ LIN_SDT_PROBE3(uid16, linux_lchown16, entry, args->path, args->uid,
+ args->gid);
+ LIN_SDT_PROBE1(uid16, linux_lchown16, conv_path, path);
+
error = kern_lchown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
CAST_NOCHG(args->gid));
LFREEPATH(path);
+
+ LIN_SDT_PROBE1(uid16, linux_lchown16, return, error);
return (error);
}
@@ -103,17 +164,19 @@ linux_setgroups16(struct thread *td, struct linux_setgroups16_args *args)
int ngrp, error;
struct proc *p;
-#ifdef DEBUG
- if (ldebug(setgroups16))
- printf(ARGS(setgroups16, "%d, *"), args->gidsetsize);
-#endif
+ LIN_SDT_PROBE2(uid16, linux_setgroups16, entry, args->gidsetsize,
+ args->gidset);
ngrp = args->gidsetsize;
- if (ngrp < 0 || ngrp >= ngroups_max + 1)
+ if (ngrp < 0 || ngrp >= ngroups_max + 1) {
+ LIN_SDT_PROBE1(uid16, linux_setgroups16, return, EINVAL);
return (EINVAL);
+ }
linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_TEMP, M_WAITOK);
error = copyin(args->gidset, linux_gidset, ngrp * sizeof(l_gid16_t));
if (error) {
+ LIN_SDT_PROBE1(uid16, linux_setgroups16, copyin_error, error);
+ LIN_SDT_PROBE1(uid16, linux_setgroups16, return, error);
free(linux_gidset, M_TEMP);
return (error);
}
@@ -131,6 +194,9 @@ linux_setgroups16(struct thread *td, struct linux_setgroups16_args *args)
if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS, 0)) != 0) {
PROC_UNLOCK(p);
crfree(newcred);
+
+ LIN_SDT_PROBE1(uid16, linux_setgroups16, priv_check_cred_error,
+ error);
goto out;
}
@@ -154,6 +220,8 @@ linux_setgroups16(struct thread *td, struct linux_setgroups16_args *args)
error = 0;
out:
free(linux_gidset, M_TEMP);
+
+ LIN_SDT_PROBE1(uid16, linux_setgroups16, return, error);
return (error);
}
@@ -165,10 +233,8 @@ linux_getgroups16(struct thread *td, struct linux_getgroups16_args *args)
gid_t *bsd_gidset;
int bsd_gidsetsz, ngrp, error;
-#ifdef DEBUG
- if (ldebug(getgroups16))
- printf(ARGS(getgroups16, "%d, *"), args->gidsetsize);
-#endif
+ LIN_SDT_PROBE2(uid16, linux_getgroups16, entry, args->gidsetsize,
+ args->gidset);
cred = td->td_ucred;
bsd_gidset = cred->cr_groups;
@@ -182,11 +248,15 @@ linux_getgroups16(struct thread *td, struct linux_getgroups16_args *args)
if ((ngrp = args->gidsetsize) == 0) {
td->td_retval[0] = bsd_gidsetsz;
+
+ LIN_SDT_PROBE1(uid16, linux_getgroups16, return, 0);
return (0);
}
- if (ngrp < bsd_gidsetsz)
+ if (ngrp < bsd_gidsetsz) {
+ LIN_SDT_PROBE1(uid16, linux_getgroups16, return, EINVAL);
return (EINVAL);
+ }
ngrp = 0;
linux_gidset = malloc(bsd_gidsetsz * sizeof(*linux_gidset),
@@ -198,10 +268,15 @@ linux_getgroups16(struct thread *td, struct linux_getgroups16_args *args)
error = copyout(linux_gidset, args->gidset, ngrp * sizeof(l_gid16_t));
free(linux_gidset, M_TEMP);
- if (error)
+ if (error) {
+ LIN_SDT_PROBE1(uid16, linux_getgroups16, copyout_error, error);
+ LIN_SDT_PROBE1(uid16, linux_getgroups16, return, error);
return (error);
+ }
td->td_retval[0] = ngrp;
+
+ LIN_SDT_PROBE1(uid16, linux_getgroups16, return, 0);
return (0);
}
@@ -219,7 +294,11 @@ int
linux_getgid16(struct thread *td, struct linux_getgid16_args *args)
{
+ LIN_SDT_PROBE0(uid16, linux_getgid16, entry);
+
td->td_retval[0] = td->td_ucred->cr_rgid;
+
+ LIN_SDT_PROBE1(uid16, linux_getgid16, return, 0);
return (0);
}
@@ -227,7 +306,11 @@ int
linux_getuid16(struct thread *td, struct linux_getuid16_args *args)
{
+ LIN_SDT_PROBE0(uid16, linux_getuid16, entry);
+
td->td_retval[0] = td->td_ucred->cr_ruid;
+
+ LIN_SDT_PROBE1(uid16, linux_getuid16, return, 0);
return (0);
}
@@ -235,74 +318,124 @@ int
linux_getegid16(struct thread *td, struct linux_getegid16_args *args)
{
struct getegid_args bsd;
+ int error;
+
+ LIN_SDT_PROBE0(uid16, linux_getegid16, entry);
+
+ error = sys_getegid(td, &bsd);
- return (sys_getegid(td, &bsd));
+ LIN_SDT_PROBE1(uid16, linux_getegid16, return, error);
+ return (error);
}
int
linux_geteuid16(struct thread *td, struct linux_geteuid16_args *args)
{
struct geteuid_args bsd;
+ int error;
+
+ LIN_SDT_PROBE0(uid16, linux_geteuid16, entry);
+
+ error = sys_geteuid(td, &bsd);
- return (sys_geteuid(td, &bsd));
+ LIN_SDT_PROBE1(uid16, linux_geteuid16, return, error);
+ return (error);
}
int
linux_setgid16(struct thread *td, struct linux_setgid16_args *args)
{
struct setgid_args bsd;
+ int error;
+
+ LIN_SDT_PROBE1(uid16, linux_setgid16, entry, args->gid);
bsd.gid = args->gid;
- return (sys_setgid(td, &bsd));
+ error = sys_setgid(td, &bsd);
+
+ LIN_SDT_PROBE1(uid16, linux_setgid16, return, error);
+ return (error);
}
int
linux_setuid16(struct thread *td, struct linux_setuid16_args *args)
{
struct setuid_args bsd;
+ int error;
+
+ LIN_SDT_PROBE1(uid16, linux_setuid16, entry, args->uid);
bsd.uid = args->uid;
- return (sys_setuid(td, &bsd));
+ error = sys_setuid(td, &bsd);
+
+ LIN_SDT_PROBE1(uid16, linux_setuid16, return, error);
+ return (error);
}
int
linux_setregid16(struct thread *td, struct linux_setregid16_args *args)
{
struct setregid_args bsd;
+ int error;
+
+ LIN_SDT_PROBE2(uid16, linux_setregid16, entry, args->rgid, args->egid);
bsd.rgid = CAST_NOCHG(args->rgid);
bsd.egid = CAST_NOCHG(args->egid);
- return (sys_setregid(td, &bsd));
+ error = sys_setregid(td, &bsd);
+
+ LIN_SDT_PROBE1(uid16, linux_setregid16, return, error);
+ return (error);
}
int
linux_setreuid16(struct thread *td, struct linux_setreuid16_args *args)
{
struct setreuid_args bsd;
+ int error;
+
+ LIN_SDT_PROBE2(uid16, linux_setreuid16, entry, args->ruid, args->euid);
bsd.ruid = CAST_NOCHG(args->ruid);
bsd.euid = CAST_NOCHG(args->euid);
- return (sys_setreuid(td, &bsd));
+ error = sys_setreuid(td, &bsd);
+
+ LIN_SDT_PROBE1(uid16, linux_setreuid16, return, error);
+ return (error);
}
int
linux_setresgid16(struct thread *td, struct linux_setresgid16_args *args)
{
struct setresgid_args bsd;
+ int error;
+
+ LIN_SDT_PROBE3(uid16, linux_setresgid16, entry, args->rgid, args->egid,
+ args->sgid);
bsd.rgid = CAST_NOCHG(args->rgid);
bsd.egid = CAST_NOCHG(args->egid);
bsd.sgid = CAST_NOCHG(args->sgid);
- return (sys_setresgid(td, &bsd));
+ error = sys_setresgid(td, &bsd);
+
+ LIN_SDT_PROBE1(uid16, linux_setresgid16, return, error);
+ return (error);
}
int
linux_setresuid16(struct thread *td, struct linux_setresuid16_args *args)
{
struct setresuid_args bsd;
+ int error;
+
+ LIN_SDT_PROBE3(uid16, linux_setresuid16, entry, args->ruid, args->euid,
+ args->suid);
bsd.ruid = CAST_NOCHG(args->ruid);
bsd.euid = CAST_NOCHG(args->euid);
bsd.suid = CAST_NOCHG(args->suid);
- return (sys_setresuid(td, &bsd));
+ error = sys_setresuid(td, &bsd);
+
+ LIN_SDT_PROBE1(uid16, linux_setresuid16, return, error);
+ return (error);
}
OpenPOWER on IntegriCloud