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authorJeff Dike <jdike@addtoit.com>2007-10-16 01:27:11 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:06 -0700
commit512b6fb1c14d4c34f23a3419b0789ad01914a899 (patch)
tree29e51c256dde41db297cff28767bf4dc4a1dc73f /arch/um/os-Linux/process.c
parentb21d4b08b6686fa13bf9d4cae1ae08cb23ea3d53 (diff)
uml: userspace files should call libc directly
A number of files that were changed in the recent removal of tt mode are userspace files which call the os_* wrappers instead of calling libc directly. A few other files were affected by this, through This patch makes these call glibc directly. There are also style fixes in the affected areas. os_print_error has no remaining callers, so it is deleted. There is a interface change to os_set_exec_close, eliminating a parameter which was always the same. The callers are fixed as well. os_process_pc got its error path cleaned up. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/os-Linux/process.c')
-rw-r--r--arch/um/os-Linux/process.c37
1 files changed, 20 insertions, 17 deletions
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index 8b57eb3647f..90b480cf78f 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -7,6 +7,7 @@
#include <unistd.h>
#include <errno.h>
#include <signal.h>
+#include <fcntl.h>
#include <sys/mman.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
@@ -28,31 +29,32 @@
unsigned long os_process_pc(int pid)
{
char proc_stat[STAT_PATH_LEN], buf[256];
- unsigned long pc;
+ unsigned long pc = ARBITRARY_ADDR;
int fd, err;
sprintf(proc_stat, "/proc/%d/stat", pid);
- fd = os_open_file(proc_stat, of_read(OPENFLAGS()), 0);
+ fd = open(proc_stat, O_RDONLY, 0);
if (fd < 0) {
printk(UM_KERN_ERR "os_process_pc - couldn't open '%s', "
- "err = %d\n", proc_stat, -fd);
- return ARBITRARY_ADDR;
+ "errno = %d\n", proc_stat, errno);
+ goto out;
}
CATCH_EINTR(err = read(fd, buf, sizeof(buf)));
if (err < 0) {
printk(UM_KERN_ERR "os_process_pc - couldn't read '%s', "
"err = %d\n", proc_stat, errno);
- os_close_file(fd);
- return ARBITRARY_ADDR;
+ goto out_close;
}
os_close_file(fd);
pc = ARBITRARY_ADDR;
if (sscanf(buf, "%*d " COMM_SCANF " %*c %*d %*d %*d %*d %*d %*d %*d "
- "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d "
- "%*d %*d %*d %*d %*d %lu", &pc) != 1) {
+ "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d "
+ "%*d %*d %*d %*d %*d %lu", &pc) != 1)
printk(UM_KERN_ERR "os_process_pc - couldn't find pc in '%s'\n",
buf);
- }
+ out_close:
+ close(fd);
+ out:
return pc;
}
@@ -60,25 +62,26 @@ int os_process_parent(int pid)
{
char stat[STAT_PATH_LEN];
char data[256];
- int parent, n, fd;
+ int parent = FAILURE_PID, n, fd;
if (pid == -1)
- return -1;
+ return parent;
snprintf(stat, sizeof(stat), "/proc/%d/stat", pid);
- fd = os_open_file(stat, of_read(OPENFLAGS()), 0);
+ fd = open(stat, O_RDONLY, 0);
if (fd < 0) {
- printk(UM_KERN_ERR "Couldn't open '%s', err = %d\n", stat, -fd);
- return FAILURE_PID;
+ printk(UM_KERN_ERR "Couldn't open '%s', errno = %d\n", stat,
+ errno);
+ return parent;
}
CATCH_EINTR(n = read(fd, data, sizeof(data)));
- os_close_file(fd);
+ close(fd);
if (n < 0) {
- printk(UM_KERN_ERR "Couldn't read '%s', err = %d\n", stat,
+ printk(UM_KERN_ERR "Couldn't read '%s', errno = %d\n", stat,
errno);
- return FAILURE_PID;
+ return parent;
}
parent = FAILURE_PID;