Implemented <fcntl.h>.

2 files changed, 122 insertions, 0 deletions

diff --git a/tests/fcntl/output.txt b/tests/fcntl/output.txt
new file mode 100644
index 00000000..1077e89b
--- /dev/null
+++ b/tests/fcntl/output.txt
@@ -0,0 +1,42 @@
+F_DUPFD: 100
+errno: 0
+
+F_DUPFD/error1: -1
+errno: 9
+
+F_DUPFD/error2: -1
+errno: 22
+
+F_GETFD: 0
+errno: 0
+
+F_SETFD: 0
+errno: 0
+
+F_GETFL: 2
+errno: 0
+
+F_SETFL: 0
+errno: 0
+
+F_GETFL/2: 0x402
+errno: 0
+
+F_GETLK: 0
+errno: 0
+lk.l_type == F_UNLCK: 1
+
+F_SETLK: 0
+errno: 0
+
+F_SETLKW: 0
+errno: 0
+
+F_SETOWN: -1
+errno: 22
+
+F_GETOWN: -1
+errno: 22
+
+INVALID: -1
+errno: 22
diff --git a/tests/fcntl/src.c b/tests/fcntl/src.c
new file mode 100644
index 00000000..1e9a1536
--- /dev/null
+++ b/tests/fcntl/src.c
@@ -0,0 +1,80 @@
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+
+int main() {
+  int f = open("/test", O_RDWR, 0777);
+
+  printf("F_DUPFD: %d\n", fcntl(f, F_DUPFD, 100));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_DUPFD/error1: %d\n", fcntl(50, F_DUPFD, 200));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_DUPFD/error2: %d\n", fcntl(f, F_DUPFD, -1));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_GETFD: %d\n", fcntl(f, F_GETFD));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_SETFD: %d\n", fcntl(f, F_SETFD));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_GETFL: %d\n", fcntl(f, F_GETFL));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_SETFL: %d\n", fcntl(f, F_SETFL, O_APPEND));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_GETFL/2: %#x\n", fcntl(f, F_GETFL));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  flock lk;
+  lk.l_type = 42;
+  printf("F_GETLK: %d\n", fcntl(f, F_GETLK, &lk));
+  printf("errno: %d\n", errno);
+  printf("lk.l_type == F_UNLCK: %d\n", lk.l_type == F_UNLCK);
+  printf("\n");
+  errno = 0;
+
+  printf("F_SETLK: %d\n", fcntl(f, F_SETLK, &lk));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_SETLKW: %d\n", fcntl(f, F_SETLK, &lk));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_SETOWN: %d\n", fcntl(f, F_SETOWN, 123));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("F_GETOWN: %d\n", fcntl(f, F_GETOWN));
+  printf("errno: %d\n", errno);
+  printf("\n");
+  errno = 0;
+
+  printf("INVALID: %d\n", fcntl(f, 123));
+  printf("errno: %d\n", errno);
+
+  return 0;
+}