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| 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 | |
| parent | b80bfc8b53153ca9aefa32ecd51ac4d6cfdbb842 (diff) | |
| download | glibc-174420d2bc39c611fbc09669490b96fc6cc81520.tar.gz glibc-174420d2bc39c611fbc09669490b96fc6cc81520.tar.xz glibc-174420d2bc39c611fbc09669490b96fc6cc81520.zip | |
* 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.
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | login/login_tty.c | 10 |
2 files changed, 11 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog index e4ad3c8a90..eed866ff58 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2007-10-04 Ulrich Drepper <drepper@redhat.com> + * 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. + * misc/error.h: Remove support for use outside of libc. We have to include <features.h> now. Include <bits/error.h> if possible. * misc/bits/error.h: New file. 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); |