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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_rb_ca.c | |
| parent | 1cacc01dc0623ac6443e19580222331812bddbbc (diff) | |
| download | musl-7765706c0584ed4a30e0b7a3ada742e490ef02b0.tar.gz musl-7765706c0584ed4a30e0b7a3ada742e490ef02b0.tar.bz2 musl-7765706c0584ed4a30e0b7a3ada742e490ef02b0.tar.xz musl-7765706c0584ed4a30e0b7a3ada742e490ef02b0.zip | |
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_rb_ca.c')
| -rw-r--r-- | src/stdio/__fopen_rb_ca.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/stdio/__fopen_rb_ca.c b/src/stdio/__fopen_rb_ca.c index b72c6304..183a5d55 100644 --- a/src/stdio/__fopen_rb_ca.c +++ b/src/stdio/__fopen_rb_ca.c @@ -8,6 +8,7 @@ FILE *__fopen_rb_ca(const char *filename, FILE *f, unsigned char *buf, size_t le f->fd = sys_open(filename, O_RDONLY|O_CLOEXEC); if (f->fd < 0) return 0; + __syscall(SYS_fcntl, f->fd, F_SETFD, FD_CLOEXEC); f->flags = F_NOWR | F_PERM; f->buf = buf + UNGET; |