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authorJeff Dike <jdike@addtoit.com>2008-02-04 22:31:04 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 09:44:29 -0800
commitbf8fde785b872282e7e86d9ea8a9c4e543985bb3 (patch)
treecb813edfbb04c8474caab0f8a26a8512a503cf82 /arch/um/os-Linux
parent7b5cc6ee6cf9001775c348bac09814a45f1276b7 (diff)
uml: miscellaneous code cleanups
Code tidying - the pid field of struct irq_fd isn't used, so it is removed os_set_fd_async needed to read flags before changing them, it doesn't need a pid passed in because it can call getpid itself, and a block of unused code needed deleting os_get_exec_close was unused, so it is removed ptrace_child called _exit for historical reasons which are no longer valid, so just calls exit instead Signed-off-by: Jeff Dike 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')
-rw-r--r--arch/um/os-Linux/file.c38
-rw-r--r--arch/um/os-Linux/start_up.c3
2 files changed, 13 insertions, 28 deletions
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index 9387cb11c0ad..4f547d75b17e 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -328,19 +328,6 @@ int os_file_modtime(const char *file, unsigned long *modtime)
return 0;
}
-int os_get_exec_close(int fd, int *close_on_exec)
-{
- int ret;
-
- CATCH_EINTR(ret = fcntl(fd, F_GETFD));
-
- if(ret < 0)
- return -errno;
-
- *close_on_exec = (ret & FD_CLOEXEC) ? 1 : 0;
- return ret;
-}
-
int os_set_exec_close(int fd)
{
int err;
@@ -380,30 +367,27 @@ int os_pipe(int *fds, int stream, int close_on_exec)
return err;
}
-int os_set_fd_async(int fd, int owner)
+int os_set_fd_async(int fd)
{
- int err;
+ int err, flags;
+
+ flags = fcntl(fd, F_GETFL);
+ if (flags < 0)
+ return -errno;
- /* XXX This should do F_GETFL first */
- if(fcntl(fd, F_SETFL, O_ASYNC | O_NONBLOCK) < 0){
+ flags |= O_ASYNC | O_NONBLOCK;
+ if (fcntl(fd, F_SETFL, flags) < 0) {
err = -errno;
printk("os_set_fd_async : failed to set O_ASYNC and "
"O_NONBLOCK on fd # %d, errno = %d\n", fd, errno);
return err;
}
-#ifdef notdef
- if(fcntl(fd, F_SETFD, 1) < 0){
- printk("os_set_fd_async : Setting FD_CLOEXEC failed, "
- "errno = %d\n", errno);
- }
-#endif
- if((fcntl(fd, F_SETSIG, SIGIO) < 0) ||
- (fcntl(fd, F_SETOWN, owner) < 0)){
+ if ((fcntl(fd, F_SETSIG, SIGIO) < 0) ||
+ (fcntl(fd, F_SETOWN, os_getpid()) < 0)) {
err = -errno;
printk("os_set_fd_async : Failed to fcntl F_SETOWN "
- "(or F_SETSIG) fd %d to pid %d, errno = %d\n", fd,
- owner, errno);
+ "(or F_SETSIG) fd %d, errno = %d\n", fd, errno);
return err;
}
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 6d56d15884fd..bcf0c9b86b10 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -60,7 +60,8 @@ static int ptrace_child(void)
* the UML code itself.
*/
ret = 2;
- _exit(ret);
+
+ exit(ret);
}
static void fatal_perror(const char *str)