diff options
| -rw-r--r-- | src/stdio/popen.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/stdio/popen.c b/src/stdio/popen.c index 1d33e9d6..50765daa 100644 --- a/src/stdio/popen.c +++ b/src/stdio/popen.c @@ -31,9 +31,9 @@ FILE *popen(const char *cmd, const char *mode) close(p[1]); return NULL; case 0: - dup2(p[1-op], 1-op); - close(p[0]); - close(p[1]); + if (dup2(p[1-op], 1-op) < 0) _exit(127); + if (p[0] != 1-op) close(p[0]); + if (p[1] != 1-op) close(p[1]); execl("/bin/sh", "sh", "-c", cmd, (char *)0); _exit(127); } |