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| author | Rich Felker <dalias@aerifal.cx> | 2014-06-06 15:42:42 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-06-06 15:42:42 -0400 |
| commit | 7765706c0584ed4a30e0b7a3ada742e490ef02b0 (patch) | |
| tree | 786ba57bf840d5f5db48167284c55f9db6698e6e /src/stdio/fopen.c | |
| parent | 1cacc01dc0623ac6443e19580222331812bddbbc (diff) | |
| download | musl-7765706c0584ed4a30e0b7a3ada742e490ef02b0.tar.gz | |
add O_CLOEXEC fallback for open and related functions
since there is no easy way to detect whether open honored or ignored
the O_CLOEXEC flag, the optimal solution to providing a fallback is
simply to make the fcntl syscall to set the close-on-exec flag
immediately after open returns.
Diffstat (limited to 'src/stdio/fopen.c')
| -rw-r--r-- | src/stdio/fopen.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/stdio/fopen.c b/src/stdio/fopen.c index 3d97cfa8..07bdb6e8 100644 --- a/src/stdio/fopen.c +++ b/src/stdio/fopen.c @@ -20,6 +20,8 @@ FILE *fopen(const char *restrict filename, const char *restrict mode) fd = sys_open_cp(filename, flags, 0666); if (fd < 0) return 0; + if (flags & O_CLOEXEC) + __syscall(SYS_fcntl, fd, F_SETFD, FD_CLOEXEC); f = __fdopen(fd, mode); if (f) return f; |