diff options
Diffstat (limited to 'libc/misc/utmp')
| -rw-r--r-- | libc/misc/utmp/utent.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/libc/misc/utmp/utent.c b/libc/misc/utmp/utent.c index f0700af21..7d8a2d3c1 100644 --- a/libc/misc/utmp/utent.c +++ b/libc/misc/utmp/utent.c @@ -34,24 +34,29 @@ static const char *static_ut_name = default_file_name; static void __setutent(void) { if (static_fd < 0) { - static_fd = open(static_ut_name, O_RDWR); +#ifndef O_CLOEXEC +# define O_CLOEXEC 0 +#endif + static_fd = open(static_ut_name, O_RDWR | O_CLOEXEC); if (static_fd < 0) { - static_fd = open(static_ut_name, O_RDONLY); + static_fd = open(static_ut_name, O_RDONLY | O_CLOEXEC); if (static_fd < 0) { return; /* static_fd remains < 0 */ } } - /* Make sure the file will be closed on exec() */ - fcntl(static_fd, F_SETFD, FD_CLOEXEC); - // thus far, {G,S}ETFD only has this single flag, - // and setting it never fails. - //int ret = fcntl(static_fd, F_GETFD, 0); - //if (ret >= 0) { - // ret = fcntl(static_fd, F_SETFD, ret | FD_CLOEXEC); - //} - //if (ret < 0) { - // static_fd = -1; - //} + if (O_CLOEXEC == 0) { + /* Make sure the file will be closed on exec() */ + fcntl(static_fd, F_SETFD, FD_CLOEXEC); + // thus far, {G,S}ETFD only has this single flag, + // and setting it never fails. + //int ret = fcntl(static_fd, F_GETFD, 0); + //if (ret >= 0) { + // ret = fcntl(static_fd, F_SETFD, ret | FD_CLOEXEC); + //} + //if (ret < 0) { + // static_fd = -1; + //} + } return; } lseek(static_fd, 0, SEEK_SET); |