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uml: userspace files should call libc directly

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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>
This commit is contained in:
Jeff Dike 2007-10-16 01:27:11 -07:00 • committed by Linus Torvalds
parent b21d4b08b6
commit 512b6fb1c1
12 changed files with 138 additions and 121 deletions
Download patch file Download diff file Expand all files Collapse all files

37
arch/um/os-Linux/process.c
View file

@ -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;