diff options
| -rw-r--r-- | src/fcntl/fcntl.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/fcntl/fcntl.c b/src/fcntl/fcntl.c index fb7806a3..390ef758 100644 --- a/src/fcntl/fcntl.c +++ b/src/fcntl/fcntl.c @@ -22,5 +22,21 @@ int fcntl(int fd, int cmd, ...) if (ret) return __syscall_ret(ret); return ex.type == F_OWNER_PGRP ? -ex.pid : ex.pid; } + if (cmd == F_DUPFD_CLOEXEC) { + int ret = __syscall(SYS_fcntl, fd, F_DUPFD_CLOEXEC, arg); + if (ret != -EINVAL) { + if (ret >= 0) + __syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC); + return __syscall_ret(ret); + } + ret = __syscall(SYS_fcntl, fd, F_DUPFD_CLOEXEC, 0); + if (ret != -EINVAL) { + if (ret >= 0) __syscall(SYS_close, ret); + return __syscall_ret(-EINVAL); + } + ret = __syscall(SYS_fcntl, fd, F_DUPFD, arg); + if (ret >= 0) __syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC); + return __syscall_ret(ret); + } return syscall(SYS_fcntl, fd, cmd, arg); } |