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| author | Rich Felker <dalias@aerifal.cx> | 2013-11-22 15:55:58 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2013-11-22 15:55:58 -0500 |
| commit | caaf7d443d8f502a209cb5489c45ddcccbebdd34 (patch) | |
| tree | d7de17f17dc4dbf58f39f953f909787ce7608dbf /src/misc/wordexp.c | |
| parent | 8253f59eae7bdb8b5a0f5b87212671564882d1f0 (diff) | |
| download | musl-caaf7d443d8f502a209cb5489c45ddcccbebdd34.tar.gz musl-caaf7d443d8f502a209cb5489c45ddcccbebdd34.tar.xz musl-caaf7d443d8f502a209cb5489c45ddcccbebdd34.zip | |
fix fd leak and case where fd 1 is already closed in wordexp
Diffstat (limited to 'src/misc/wordexp.c')
| -rw-r--r-- | src/misc/wordexp.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/misc/wordexp.c b/src/misc/wordexp.c index 8f0d42f5..1387b5d2 100644 --- a/src/misc/wordexp.c +++ b/src/misc/wordexp.c @@ -8,6 +8,7 @@ #include <sys/wait.h> #include <signal.h> #include <errno.h> +#include <fcntl.h> #include "pthread_impl.h" static char *getword(FILE *f) @@ -88,7 +89,7 @@ static int do_wordexp(const char *s, wordexp_t *we, int flags) we->we_offs = 0; } - if (pipe(p) < 0) goto nospace; + if (pipe2(p, O_CLOEXEC) < 0) goto nospace; __block_all_sigs(&set); pid = fork(); __restore_sigs(&set); @@ -98,9 +99,8 @@ static int do_wordexp(const char *s, wordexp_t *we, int flags) goto nospace; } if (!pid) { - dup2(p[1], 1); - close(p[0]); - close(p[1]); + if (p[1] == 1) fcntl(1, F_SETFD, 0); + else dup2(p[1], 1); execl("/bin/sh", "sh", "-c", "eval \"printf %s\\\\\\\\0 x $1 $2\"", "sh", s, redir, (char *)0); |