Index: fusl/src/fcntl/fcntl.c |
diff --git a/fusl/src/fcntl/fcntl.c b/fusl/src/fcntl/fcntl.c |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ce615d0e5dcce990992bd99d65b52f1ec0a3d53c |
--- /dev/null |
+++ b/fusl/src/fcntl/fcntl.c |
@@ -0,0 +1,49 @@ |
+#define _GNU_SOURCE |
+#include <fcntl.h> |
+#include <stdarg.h> |
+#include <errno.h> |
+#include "syscall.h" |
+#include "libc.h" |
+ |
+int fcntl(int fd, int cmd, ...) |
+{ |
+ unsigned long arg; |
+ va_list ap; |
+ va_start(ap, cmd); |
+ arg = va_arg(ap, unsigned long); |
+ va_end(ap); |
+ if (cmd == F_SETFL) arg |= O_LARGEFILE; |
+ if (cmd == F_SETLKW) return syscall_cp(SYS_fcntl, fd, cmd, (void *)arg); |
+ if (cmd == F_GETOWN) { |
+ struct f_owner_ex ex; |
+ int ret = __syscall(SYS_fcntl, fd, F_GETOWN_EX, &ex); |
+ if (ret == -EINVAL) return __syscall(SYS_fcntl, fd, cmd, (void *)arg); |
+ 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); |
+ } |
+ switch (cmd) { |
+ case F_SETLK: |
+ case F_GETLK: |
+ case F_GETOWN_EX: |
+ case F_SETOWN_EX: |
+ return syscall(SYS_fcntl, fd, cmd, (void *)arg); |
+ default: |
+ return syscall(SYS_fcntl, fd, cmd, arg); |
+ } |
+} |