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-rw-r--r--libc/misc/dirent/opendir.c21
-rw-r--r--libc/misc/utmp/utent.c31
-rw-r--r--libc/pwd_grp/lckpwdf.c34
3 files changed, 42 insertions, 44 deletions
diff --git a/libc/misc/dirent/opendir.c b/libc/misc/dirent/opendir.c
index fa07d0052..70b30658e 100644
--- a/libc/misc/dirent/opendir.c
+++ b/libc/misc/dirent/opendir.c
@@ -81,28 +81,31 @@ DIR *opendir(const char *name)
}
# define O_DIRECTORY 0
#endif
- if ((fd = open(name, O_RDONLY|O_NDELAY|O_DIRECTORY)) < 0)
+#ifndef O_CLOEXEC
+# define O_CLOEXEC 0
+#endif
+ fd = open(name, O_RDONLY|O_NDELAY|O_DIRECTORY|O_CLOEXEC);
+ if (fd < 0)
return NULL;
/* Note: we should check to make sure that between the stat() and open()
* call, 'name' didnt change on us, but that's only if O_DIRECTORY isnt
* defined and since Linux has supported it for like ever, i'm not going
* to worry about it right now (if ever). */
- if (fstat(fd, &statbuf) < 0)
- goto close_and_ret;
-
- /* According to POSIX, directory streams should be closed when
- * exec. From "Anna Pluzhnikov" <besp@midway.uchicago.edu>.
- */
- if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
+ if (fstat(fd, &statbuf) < 0) {
int saved_errno;
-close_and_ret:
saved_errno = errno;
close(fd);
__set_errno(saved_errno);
return NULL;
}
+ /* According to POSIX, directory streams should be closed when
+ * exec. From "Anna Pluzhnikov" <besp@midway.uchicago.edu>.
+ */
+ if (O_CLOEXEC == 0)
+ fcntl(fd, F_SETFD, FD_CLOEXEC);
+
ptr = fd_to_DIR(fd, statbuf.st_blksize);
if (!ptr) {
close(fd);
diff --git a/libc/misc/utmp/utent.c b/libc/misc/utmp/utent.c
index f0700af21..7d8a2d3c1 100644
--- a/libc/misc/utmp/utent.c
+++ b/libc/misc/utmp/utent.c
@@ -34,24 +34,29 @@ static const char *static_ut_name = default_file_name;
static void __setutent(void)
{
if (static_fd < 0) {
- static_fd = open(static_ut_name, O_RDWR);
+#ifndef O_CLOEXEC
+# define O_CLOEXEC 0
+#endif
+ static_fd = open(static_ut_name, O_RDWR | O_CLOEXEC);
if (static_fd < 0) {
- static_fd = open(static_ut_name, O_RDONLY);
+ static_fd = open(static_ut_name, O_RDONLY | O_CLOEXEC);
if (static_fd < 0) {
return; /* static_fd remains < 0 */
}
}
- /* Make sure the file will be closed on exec() */
- fcntl(static_fd, F_SETFD, FD_CLOEXEC);
- // thus far, {G,S}ETFD only has this single flag,
- // and setting it never fails.
- //int ret = fcntl(static_fd, F_GETFD, 0);
- //if (ret >= 0) {
- // ret = fcntl(static_fd, F_SETFD, ret | FD_CLOEXEC);
- //}
- //if (ret < 0) {
- // static_fd = -1;
- //}
+ if (O_CLOEXEC == 0) {
+ /* Make sure the file will be closed on exec() */
+ fcntl(static_fd, F_SETFD, FD_CLOEXEC);
+ // thus far, {G,S}ETFD only has this single flag,
+ // and setting it never fails.
+ //int ret = fcntl(static_fd, F_GETFD, 0);
+ //if (ret >= 0) {
+ // ret = fcntl(static_fd, F_SETFD, ret | FD_CLOEXEC);
+ //}
+ //if (ret < 0) {
+ // static_fd = -1;
+ //}
+ }
return;
}
lseek(static_fd, 0, SEEK_SET);
diff --git a/libc/pwd_grp/lckpwdf.c b/libc/pwd_grp/lckpwdf.c
index c0c8f0d90..68c46e02c 100644
--- a/libc/pwd_grp/lckpwdf.c
+++ b/libc/pwd_grp/lckpwdf.c
@@ -28,17 +28,6 @@
#include <paths.h>
#include <shadow.h>
-/* Experimentally off - libc_hidden_proto(memset) */
-/* libc_hidden_proto(open) */
-/* libc_hidden_proto(fcntl) */
-/* libc_hidden_proto(close) */
-/* libc_hidden_proto(sigfillset) */
-/* libc_hidden_proto(sigaction) */
-/* libc_hidden_proto(sigprocmask) */
-/* libc_hidden_proto(sigaddset) */
-/* libc_hidden_proto(sigemptyset) */
-/* libc_hidden_proto(alarm) */
-
/* How long to wait for getting the lock before returning with an error. */
#define TIMEOUT 15 /* sec */
@@ -56,7 +45,6 @@ static void noop_handler (int __sig);
int
lckpwdf (void)
{
- int flags;
sigset_t saved_set; /* Saved set of caught signals. */
struct sigaction saved_act; /* Saved signal action. */
sigset_t new_set; /* New set of caught signals. */
@@ -72,16 +60,18 @@ lckpwdf (void)
/* Prevent problems caused by multiple threads. */
__UCLIBC_MUTEX_LOCK(mylock);
- lock_fd = open (_PATH_PASSWD, O_WRONLY);
+#ifndef O_CLOEXEC
+# define O_CLOEXEC 0
+#endif
+ lock_fd = open (_PATH_PASSWD, O_WRONLY | O_CLOEXEC);
if (lock_fd == -1) {
/* Cannot create lock file. */
- goto DONE;
+ goto DONE;
}
-
/* Make sure file gets correctly closed when process finished. */
- flags = fcntl (lock_fd, F_GETFD);
- flags |= FD_CLOEXEC;
- fcntl (lock_fd, F_SETFD, flags);
+ if (O_CLOEXEC == 0)
+ fcntl (lock_fd, F_SETFD, FD_CLOEXEC);
+
/* Now we have to get exclusive write access. Since multiple
process could try this we won't stop when it first fails.
Instead we set a timeout for the system call. Once the timer
@@ -91,7 +81,7 @@ lckpwdf (void)
It is important that we don't change the signal state. We must
restore the old signal behaviour. */
- memset (&new_act, '\0', sizeof (struct sigaction));
+ memset (&new_act, '\0', sizeof (new_act));
new_act.sa_handler = noop_handler;
__sigfillset (&new_act.sa_mask);
@@ -125,7 +115,7 @@ lckpwdf (void)
if (result < 0) {
close(lock_fd);
lock_fd = -1;
- goto DONE;
+ goto DONE;
}
rv = 0;
@@ -146,7 +136,7 @@ ulckpwdf (void)
else
{
/* Prevent problems caused by multiple threads. */
- __UCLIBC_MUTEX_LOCK(mylock);
+ __UCLIBC_MUTEX_LOCK(mylock);
result = close (lock_fd);
@@ -154,7 +144,7 @@ ulckpwdf (void)
lock_fd = -1;
/* Clear mutex. */
- __UCLIBC_MUTEX_UNLOCK(mylock);
+ __UCLIBC_MUTEX_UNLOCK(mylock);
}
return result;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 20:49:41 +0000