diff options
Diffstat (limited to 'lib/libc/stdio/fdopen.c')
| -rw-r--r-- | lib/libc/stdio/fdopen.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/lib/libc/stdio/fdopen.c b/lib/libc/stdio/fdopen.c index a0d7b71df782..49ec97eda39d 100644 --- a/lib/libc/stdio/fdopen.c +++ b/lib/libc/stdio/fdopen.c @@ -46,7 +46,7 @@ FILE * fdopen(int fd, const char *mode) { FILE *fp; - int flags, oflags, fdflags, tmp; + int flags, oflags, fdflags, rc, tmp; /* * File descriptors are a full int, but _file is only a short. @@ -76,9 +76,19 @@ fdopen(int fd, const char *mode) if ((fp = __sfp()) == NULL) return (NULL); - if ((oflags & O_CLOEXEC) && _fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) { - fp->_flags = 0; - return (NULL); + if ((oflags & O_CLOEXEC) != 0) { + tmp = _fcntl(fd, F_GETFD, 0); + if (tmp == -1) { + fp->_flags = 0; + return (NULL); + } + if ((tmp & FD_CLOEXEC) == 0) { + rc = _fcntl(fd, F_SETFD, tmp | FD_CLOEXEC); + if (rc == -1) { + fp->_flags = 0; + return (NULL); + } + } } fp->_flags = flags; |