summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/um/drivers/chan_user.c10
-rw-r--r--arch/um/drivers/daemon_user.c4
-rw-r--r--arch/um/drivers/harddog_user.c4
-rw-r--r--arch/um/drivers/hostaudio_kern.c4
-rw-r--r--arch/um/drivers/net_user.c2
-rw-r--r--arch/um/drivers/port_kern.c2
-rw-r--r--arch/um/drivers/random.c2
-rw-r--r--arch/um/drivers/ubd_kern.c17
-rw-r--r--arch/um/include/os.h2
-rw-r--r--arch/um/kernel/ksyms.c2
-rw-r--r--arch/um/kernel/physmem.c2
-rw-r--r--arch/um/kernel/sigio.c2
-rw-r--r--arch/um/kernel/smp.c12
-rw-r--r--arch/um/kernel/tt/process_kern.c7
-rw-r--r--arch/um/kernel/tt/ptproxy/proxy.c9
-rw-r--r--arch/um/kernel/tt/tracer.c2
-rw-r--r--arch/um/os-Linux/file.c18
-rw-r--r--arch/um/sys-i386/bugs.c2
-rw-r--r--arch/um/sys-i386/ldt.c2
19 files changed, 64 insertions, 41 deletions
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index ee53cf8..d226f10 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -85,7 +85,7 @@ static int winch_thread(void *arg)
pty_fd = data->pty_fd;
pipe_fd = data->pipe_fd;
- count = os_write_file(pipe_fd, &c, sizeof(c));
+ count = os_write_file_k(pipe_fd, &c, sizeof(c));
if(count != sizeof(c))
printk("winch_thread : failed to write synchronization "
"byte, err = %d\n", -count);
@@ -120,7 +120,7 @@ static int winch_thread(void *arg)
* host - since they are not different kernel threads, we cannot use
* kernel semaphores. We don't use SysV semaphores because they are
* persistent. */
- count = os_read_file(pipe_fd, &c, sizeof(c));
+ count = os_read_file_k(pipe_fd, &c, sizeof(c));
if(count != sizeof(c))
printk("winch_thread : failed to read synchronization byte, "
"err = %d\n", -count);
@@ -130,7 +130,7 @@ static int winch_thread(void *arg)
* are blocked.*/
sigsuspend(&sigs);
- count = os_write_file(pipe_fd, &c, sizeof(c));
+ count = os_write_file_k(pipe_fd, &c, sizeof(c));
if(count != sizeof(c))
printk("winch_thread : write failed, err = %d\n",
-count);
@@ -162,7 +162,7 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out)
}
*fd_out = fds[0];
- n = os_read_file(fds[0], &c, sizeof(c));
+ n = os_read_file_k(fds[0], &c, sizeof(c));
if(n != sizeof(c)){
printk("winch_tramp : failed to read synchronization byte\n");
printk("read failed, err = %d\n", -n);
@@ -195,7 +195,7 @@ void register_winch(int fd, struct tty_struct *tty)
if(thread > 0){
register_winch_irq(thread_fd, fd, thread, tty);
- count = os_write_file(thread_fd, &c, sizeof(c));
+ count = os_write_file_k(thread_fd, &c, sizeof(c));
if(count != sizeof(c))
printk("register_winch : failed to write "
"synchronization byte, err = %d\n",
diff --git a/arch/um/drivers/daemon_user.c b/arch/um/drivers/daemon_user.c
index b869e38..e1fd26c 100644
--- a/arch/um/drivers/daemon_user.c
+++ b/arch/um/drivers/daemon_user.c
@@ -94,7 +94,7 @@ static int connect_to_switch(struct daemon_data *pri)
req.version = SWITCH_VERSION;
req.type = REQ_NEW_CONTROL;
req.sock = *local_addr;
- n = os_write_file(pri->control, &req, sizeof(req));
+ n = os_write_file_k(pri->control, &req, sizeof(req));
if(n != sizeof(req)){
printk("daemon_open : control setup request failed, err = %d\n",
-n);
@@ -102,7 +102,7 @@ static int connect_to_switch(struct daemon_data *pri)
goto out_free;
}
- n = os_read_file(pri->control, sun, sizeof(*sun));
+ n = os_read_file_k(pri->control, sun, sizeof(*sun));
if(n != sizeof(*sun)){
printk("daemon_open : read of data socket failed, err = %d\n",
-n);
diff --git a/arch/um/drivers/harddog_user.c b/arch/um/drivers/harddog_user.c
index 5eeecf89..0fbb161 100644
--- a/arch/um/drivers/harddog_user.c
+++ b/arch/um/drivers/harddog_user.c
@@ -79,7 +79,7 @@ int start_watchdog(int *in_fd_ret, int *out_fd_ret, char *sock)
goto out_close_out;
}
- n = os_read_file(in_fds[0], &c, sizeof(c));
+ n = os_read_file_k(in_fds[0], &c, sizeof(c));
if(n == 0){
printk("harddog_open - EOF on watchdog pipe\n");
helper_wait(pid);
@@ -118,7 +118,7 @@ int ping_watchdog(int fd)
int n;
char c = '\n';
- n = os_write_file(fd, &c, sizeof(c));
+ n = os_write_file_k(fd, &c, sizeof(c));
if(n != sizeof(c)){
printk("ping_watchdog - write failed, err = %d\n", -n);
if(n < 0)
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index 10e08a8..bd6688ea 100644
--- a/arch/um/drivers/hostaudio_kern.c
+++ b/arch/um/drivers/hostaudio_kern.c
@@ -84,7 +84,7 @@ static ssize_t hostaudio_read(struct file *file, char __user *buffer,
if(kbuf == NULL)
return(-ENOMEM);
- err = os_read_file(state->fd, kbuf, count);
+ err = os_read_file_k(state->fd, kbuf, count);
if(err < 0)
goto out;
@@ -115,7 +115,7 @@ static ssize_t hostaudio_write(struct file *file, const char __user *buffer,
if(copy_from_user(kbuf, buffer, count))
goto out;
- err = os_write_file(state->fd, kbuf, count);
+ err = os_write_file_k(state->fd, kbuf, count);
if(err < 0)
goto out;
*ppos += err;
diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c
index 3503cff..2dc57a3 100644
--- a/arch/um/drivers/net_user.c
+++ b/arch/um/drivers/net_user.c
@@ -63,7 +63,7 @@ void read_output(int fd, char *output, int len)
}
*output = '\0';
- ret = os_read_file(fd, &remain, sizeof(remain));
+ ret = os_read_file_k(fd, &remain, sizeof(remain));
if (ret != sizeof(remain)) {
expected = sizeof(remain);
diff --git a/arch/um/drivers/port_kern.c b/arch/um/drivers/port_kern.c
index 1c8efd9..75bb401 100644
--- a/arch/um/drivers/port_kern.c
+++ b/arch/um/drivers/port_kern.c
@@ -113,7 +113,7 @@ static int port_accept(struct port_list *port)
}
if(atomic_read(&port->wait_count) == 0){
- os_write_file(fd, NO_WAITER_MSG, sizeof(NO_WAITER_MSG));
+ os_write_file_k(fd, NO_WAITER_MSG, sizeof(NO_WAITER_MSG));
printk("No one waiting for port\n");
}
list_add(&conn->list, &port->pending);
diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c
index e942e83..94838f4 100644
--- a/arch/um/drivers/random.c
+++ b/arch/um/drivers/random.c
@@ -44,7 +44,7 @@ static ssize_t rng_dev_read (struct file *filp, char __user *buf, size_t size,
int n, ret = 0, have_data;
while(size){
- n = os_read_file(random_fd, &data, sizeof(data));
+ n = os_read_file_k(random_fd, &data, sizeof(data));
if(n > 0){
have_data = n;
while (have_data && size) {
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 83189e1..6d163c9 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -504,7 +504,7 @@ static void ubd_handler(void)
struct ubd *dev;
int n;
- n = os_read_file(thread_fd, &req, sizeof(req));
+ n = os_read_file_k(thread_fd, &req, sizeof(req));
if(n != sizeof(req)){
printk(KERN_ERR "Pid %d - spurious interrupt in ubd_handler, "
"err = %d\n", os_getpid(), -n);
@@ -1092,8 +1092,7 @@ static void do_ubd_request(request_queue_t *q)
err = prepare_request(req, &io_req);
if(!err){
dev->active = 1;
- n = os_write_file(thread_fd, (char *) &io_req,
- sizeof(io_req));
+ n = os_write_file_k(thread_fd, &io_req, sizeof(io_req));
if(n != sizeof(io_req))
printk("write to io thread failed, "
"errno = %d\n", -n);
@@ -1336,8 +1335,8 @@ static int update_bitmap(struct io_thread_req *req)
return(1);
}
- n = os_write_file(req->fds[1], &req->bitmap_words,
- sizeof(req->bitmap_words));
+ n = os_write_file_k(req->fds[1], &req->bitmap_words,
+ sizeof(req->bitmap_words));
if(n != sizeof(req->bitmap_words)){
printk("do_io - bitmap update failed, err = %d fd = %d\n", -n,
req->fds[1]);
@@ -1381,7 +1380,7 @@ void do_io(struct io_thread_req *req)
do {
buf = &buf[n];
len -= n;
- n = os_read_file(req->fds[bit], buf, len);
+ n = os_read_file_k(req->fds[bit], buf, len);
if (n < 0) {
printk("do_io - read failed, err = %d "
"fd = %d\n", -n, req->fds[bit]);
@@ -1391,7 +1390,7 @@ void do_io(struct io_thread_req *req)
} while((n < len) && (n != 0));
if (n < len) memset(&buf[n], 0, len - n);
} else {
- n = os_write_file(req->fds[bit], buf, len);
+ n = os_write_file_k(req->fds[bit], buf, len);
if(n != len){
printk("do_io - write failed err = %d "
"fd = %d\n", -n, req->fds[bit]);
@@ -1421,7 +1420,7 @@ int io_thread(void *arg)
ignore_sigwinch_sig();
while(1){
- n = os_read_file(kernel_fd, &req, sizeof(req));
+ n = os_read_file_k(kernel_fd, &req, sizeof(req));
if(n != sizeof(req)){
if(n < 0)
printk("io_thread - read failed, fd = %d, "
@@ -1434,7 +1433,7 @@ int io_thread(void *arg)
}
io_count++;
do_io(&req);
- n = os_write_file(kernel_fd, &req, sizeof(req));
+ n = os_write_file_k(kernel_fd, &req, sizeof(req));
if(n != sizeof(req))
printk("io_thread - write failed, fd = %d, err = %d\n",
kernel_fd, -n);
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 394adcd..b463170 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -144,7 +144,9 @@ extern int os_mode_fd(int fd, int mode);
extern int os_seek_file(int fd, __u64 offset);
extern int os_open_file(char *file, struct openflags flags, int mode);
extern int os_read_file(int fd, void *buf, int len);
+extern int os_read_file_k(int fd, void *buf, int len);
extern int os_write_file(int fd, const void *buf, int count);
+extern int os_write_file_k(int fd, const void *buf, int len);
extern int os_file_size(char *file, unsigned long long *size_out);
extern int os_file_modtime(char *file, unsigned long *modtime);
extern int os_pipe(int *fd, int stream, int close_on_exec);
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 7b3e53f..7c15844 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -62,7 +62,9 @@ EXPORT_SYMBOL(os_get_exec_close);
EXPORT_SYMBOL(os_set_exec_close);
EXPORT_SYMBOL(os_getpid);
EXPORT_SYMBOL(os_open_file);
+EXPORT_SYMBOL(os_read_file_k);
EXPORT_SYMBOL(os_read_file);
+EXPORT_SYMBOL(os_write_file_k);
EXPORT_SYMBOL(os_write_file);
EXPORT_SYMBOL(os_seek_file);
EXPORT_SYMBOL(os_lock_file);
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index df1ad3b..a985620 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -341,7 +341,7 @@ void setup_physmem(unsigned long start, unsigned long reserve_end,
* from physmem_fd, so it needs to be written out there.
*/
os_seek_file(physmem_fd, __pa(&__syscall_stub_start));
- os_write_file(physmem_fd, &__syscall_stub_start, PAGE_SIZE);
+ os_write_file_k(physmem_fd, &__syscall_stub_start, PAGE_SIZE);
bootmap_size = init_bootmem(pfn, pfn + delta);
free_bootmem(__pa(reserve_end) + bootmap_size,
diff --git a/arch/um/kernel/sigio.c b/arch/um/kernel/sigio.c
index 89f9866..f756e78 100644
--- a/arch/um/kernel/sigio.c
+++ b/arch/um/kernel/sigio.c
@@ -21,7 +21,7 @@ static irqreturn_t sigio_interrupt(int irq, void *data)
{
char c;
- os_read_file(sigio_irq_fd, &c, sizeof(c));
+ os_read_file_k(sigio_irq_fd, &c, sizeof(c));
reactivate_fd(sigio_irq_fd, SIGIO_WRITE_IRQ);
return IRQ_HANDLED;
}
diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c
index 62dd093..47b6908 100644
--- a/arch/um/kernel/smp.c
+++ b/arch/um/kernel/smp.c
@@ -47,7 +47,7 @@ struct task_struct *idle_threads[NR_CPUS];
void smp_send_reschedule(int cpu)
{
- os_write_file(cpu_data[cpu].ipi_pipe[1], "R", 1);
+ os_write_file_k(cpu_data[cpu].ipi_pipe[1], "R", 1);
num_reschedules_sent++;
}
@@ -59,7 +59,7 @@ void smp_send_stop(void)
for(i = 0; i < num_online_cpus(); i++){
if(i == current_thread->cpu)
continue;
- os_write_file(cpu_data[i].ipi_pipe[1], "S", 1);
+ os_write_file_k(cpu_data[i].ipi_pipe[1], "S", 1);
}
printk("done\n");
}
@@ -108,8 +108,8 @@ static struct task_struct *idle_thread(int cpu)
{ .pid = new_task->thread.mode.tt.extern_pid,
.task = new_task } );
idle_threads[cpu] = new_task;
- CHOOSE_MODE(os_write_file(new_task->thread.mode.tt.switch_pipe[1], &c,
- sizeof(c)),
+ CHOOSE_MODE(os_write_file_k(new_task->thread.mode.tt.switch_pipe[1], &c,
+ sizeof(c)),
({ panic("skas mode doesn't support SMP"); }));
return(new_task);
}
@@ -179,7 +179,7 @@ void IPI_handler(int cpu)
int fd;
fd = cpu_data[cpu].ipi_pipe[0];
- while (os_read_file(fd, &c, 1) == 1) {
+ while (os_read_file_k(fd, &c, 1) == 1) {
switch (c) {
case 'C':
smp_call_function_slave(cpu);
@@ -239,7 +239,7 @@ int smp_call_function(void (*_func)(void *info), void *_info, int nonatomic,
info = _info;
for_each_online_cpu(i)
- os_write_file(cpu_data[i].ipi_pipe[1], "C", 1);
+ os_write_file_k(cpu_data[i].ipi_pipe[1], "C", 1);
while (atomic_read(&scf_started) != cpus)
barrier();
diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index 8029f72..c81bd20 100644
--- a/arch/um/kernel/tt/process_kern.c
+++ b/arch/um/kernel/tt/process_kern.c
@@ -57,14 +57,15 @@ void switch_to_tt(void *prev, void *next)
* nor the value in "to" (since it was the task which stole us the CPU,
* which we don't care about). */
- err = os_write_file(to->thread.mode.tt.switch_pipe[1], &c, sizeof(c));
+ err = os_write_file_k(to->thread.mode.tt.switch_pipe[1], &c, sizeof(c));
if(err != sizeof(c))
panic("write of switch_pipe failed, err = %d", -err);
if(from->thread.mode.tt.switch_pipe[0] == -1)
os_kill_process(os_getpid(), 0);
- err = os_read_file(from->thread.mode.tt.switch_pipe[0], &c, sizeof(c));
+ err = os_read_file_k(from->thread.mode.tt.switch_pipe[0], &c,
+ sizeof(c));
if(err != sizeof(c))
panic("read of switch_pipe failed, errno = %d", -err);
@@ -113,7 +114,7 @@ void suspend_new_thread(int fd)
char c;
os_stop_process(os_getpid());
- err = os_read_file(fd, &c, sizeof(c));
+ err = os_read_file_k(fd, &c, sizeof(c));
if(err != sizeof(c))
panic("read failed in suspend_new_thread, err = %d", -err);
}
diff --git a/arch/um/kernel/tt/ptproxy/proxy.c b/arch/um/kernel/tt/ptproxy/proxy.c
index c88e7b5..007beb6 100644
--- a/arch/um/kernel/tt/ptproxy/proxy.c
+++ b/arch/um/kernel/tt/ptproxy/proxy.c
@@ -338,13 +338,14 @@ int start_debugger(char *prog, int startup, int stop, int *fd_out)
"err = %d\n", -fd);
exit(1);
}
- os_write_file(fd, gdb_init_string, sizeof(gdb_init_string) - 1);
+ os_write_file_k(fd, gdb_init_string,
+ sizeof(gdb_init_string) - 1);
if(startup){
if(stop){
- os_write_file(fd, "b start_kernel\n",
- strlen("b start_kernel\n"));
+ os_write_file_k(fd, "b start_kernel\n",
+ strlen("b start_kernel\n"));
}
- os_write_file(fd, "c\n", strlen("c\n"));
+ os_write_file_k(fd, "c\n", strlen("c\n"));
}
if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){
printk("start_debugger : PTRACE_TRACEME failed, "
diff --git a/arch/um/kernel/tt/tracer.c b/arch/um/kernel/tt/tracer.c
index c235883..264da6c 100644
--- a/arch/um/kernel/tt/tracer.c
+++ b/arch/um/kernel/tt/tracer.c
@@ -44,7 +44,7 @@ static void tracer_winch_handler(int sig)
int n;
char c = 1;
- n = os_write_file(tracer_winch[1], &c, sizeof(c));
+ n = os_write_file_k(tracer_winch[1], &c, sizeof(c));
if(n != sizeof(c))
printk("tracer_winch_handler - write failed, err = %d\n", -n);
}
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index 4a9510c..5e9b8dc 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -334,12 +334,30 @@ int os_read_file(int fd, void *buf, int len)
copy_from_user_proc);
}
+int os_read_file_k(int fd, void *buf, int len)
+{
+ int n = read(fd, buf, len);
+
+ if(n < 0)
+ return -errno;
+ return n;
+}
+
int os_write_file(int fd, const void *buf, int len)
{
return file_io(fd, (void *) buf, len,
(int (*)(int, void *, int)) write, copy_to_user_proc);
}
+int os_write_file_k(int fd, const void *buf, int len)
+{
+ int n = write(fd, (void *) buf, len);
+
+ if(n < 0)
+ return -errno;
+ return n;
+}
+
int os_file_size(char *file, unsigned long long *size_out)
{
struct uml_stat buf;
diff --git a/arch/um/sys-i386/bugs.c b/arch/um/sys-i386/bugs.c
index 0393e44..74fd062 100644
--- a/arch/um/sys-i386/bugs.c
+++ b/arch/um/sys-i386/bugs.c
@@ -67,7 +67,7 @@ static int find_cpuinfo_line(int fd, char *key, char *scratch, int len)
return 1;
do {
- n = os_read_file(fd, &c, sizeof(c));
+ n = os_read_file_k(fd, &c, sizeof(c));
if(n != sizeof(c)){
printk("Failed to find newline in "
"/proc/cpuinfo, err = %d\n", -n);
diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c
index a939a7e..d031a13 100644
--- a/arch/um/sys-i386/ldt.c
+++ b/arch/um/sys-i386/ldt.c
@@ -517,7 +517,7 @@ long init_new_ldt(struct mmu_context_skas * new_mm,
.u =
{ .copy_segments =
from_mm->id.u.mm_fd } } );
- i = os_write_file(new_mm->id.u.mm_fd, &copy, sizeof(copy));
+ i = os_write_file_k(new_mm->id.u.mm_fd, &copy, sizeof(copy));
if(i != sizeof(copy))
printk("new_mm : /proc/mm copy_segments failed, "
"err = %d\n", -i);
OpenPOWER on IntegriCloud