diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2007-10-04 21:54:22 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2007-10-04 21:54:22 +0000 |
| commit | 174420d2bc39c611fbc09669490b96fc6cc81520 (patch) | |
| tree | ba3e9d43d0551624590a010db8a6282e2cfbebc2 /login | |
| parent | b80bfc8b53153ca9aefa32ecd51ac4d6cfdbb842 (diff) | |
* login/login_tty.c (login_tty): The Linux kernel can return EBUSY
for dup2 in case another thread races with the current one. Retry
in this case.
Diffstat (limited to 'login')
| -rw-r--r-- | login/login_tty.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/login/login_tty.c b/login/login_tty.c index 1bb1703267..2ba276d4a9 100644 --- a/login/login_tty.c +++ b/login/login_tty.c @@ -31,6 +31,7 @@ static char sccsid[] = "@(#)login_tty.c 8.1 (Berkeley) 6/4/93"; #endif /* LIBC_SCCS and not lint */ +#include <errno.h> #include <sys/param.h> #include <sys/ioctl.h> #include <unistd.h> @@ -63,9 +64,12 @@ login_tty(fd) } } #endif - (void) dup2(fd, 0); - (void) dup2(fd, 1); - (void) dup2(fd, 2); + while (dup2(fd, 0) == -1 && errno == EBUSY) + ; + while (dup2(fd, 1) == -1 && errno == EBUSY) + ; + while (dup2(fd, 2) == -1 && errno == EBUSY) + ; if (fd > 2) (void) close(fd); return (0); |