Initial version

6 files changed, 116 insertions, 0 deletions

diff --git a/src/fcntl/creat.c b/src/fcntl/creat.c
new file mode 100644
index 0000000..c9c4391
--- /dev/null
+++ b/src/fcntl/creat.c
@@ -0,0 +1,6 @@
+#include <fcntl.h>
+
+int creat(const char *filename, mode_t mode)
+{
+	return open(filename, O_CREAT|O_WRONLY|O_TRUNC, mode);
+}
diff --git a/src/fcntl/fcntl.c b/src/fcntl/fcntl.c
new file mode 100644
index 0000000..d3bff5c
--- /dev/null
+++ b/src/fcntl/fcntl.c
@@ -0,0 +1,48 @@
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include <stdarg.h>
+#include <errno.h>
+#include "syscall.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);
+	}
+}
diff --git a/src/fcntl/open.c b/src/fcntl/open.c
new file mode 100644
index 0000000..4c3c827
--- /dev/null
+++ b/src/fcntl/open.c
@@ -0,0 +1,21 @@
+#include <fcntl.h>
+#include <stdarg.h>
+#include "syscall.h"
+
+int open(const char *filename, int flags, ...)
+{
+	mode_t mode = 0;
+
+	if ((flags & O_CREAT) || (flags & O_TMPFILE) == O_TMPFILE) {
+		va_list ap;
+		va_start(ap, flags);
+		mode = va_arg(ap, mode_t);
+		va_end(ap);
+	}
+
+	int fd = __sys_open_cp(filename, flags, mode);
+	if (fd>=0 && (flags & O_CLOEXEC))
+		__syscall(SYS_fcntl, fd, F_SETFD, FD_CLOEXEC);
+
+	return __syscall_ret(fd);
+}
diff --git a/src/fcntl/openat.c b/src/fcntl/openat.c
new file mode 100644
index 0000000..83a9e0d
--- /dev/null
+++ b/src/fcntl/openat.c
@@ -0,0 +1,17 @@
+#include <fcntl.h>
+#include <stdarg.h>
+#include "syscall.h"
+
+int openat(int fd, const char *filename, int flags, ...)
+{
+	mode_t mode = 0;
+
+	if ((flags & O_CREAT) || (flags & O_TMPFILE) == O_TMPFILE) {
+		va_list ap;
+		va_start(ap, flags);
+		mode = va_arg(ap, mode_t);
+		va_end(ap);
+	}
+
+	return syscall_cp(SYS_openat, fd, filename, flags|O_LARGEFILE, mode);
+}
diff --git a/src/fcntl/posix_fadvise.c b/src/fcntl/posix_fadvise.c
new file mode 100644
index 0000000..07346d2
--- /dev/null
+++ b/src/fcntl/posix_fadvise.c
@@ -0,0 +1,16 @@
+#include <fcntl.h>
+#include "syscall.h"
+
+int posix_fadvise(int fd, off_t base, off_t len, int advice)
+{
+#if defined(SYSCALL_FADVISE_6_ARG)
+	/* Some archs, at least arm and powerpc, have the syscall
+	 * arguments reordered to avoid needing 7 argument registers
+	 * due to 64-bit argument alignment. */
+	return -__syscall(SYS_fadvise, fd, advice,
+		__SYSCALL_LL_E(base), __SYSCALL_LL_E(len));
+#else
+	return -__syscall(SYS_fadvise, fd, __SYSCALL_LL_O(base),
+		__SYSCALL_LL_E(len), advice);
+#endif
+}
diff --git a/src/fcntl/posix_fallocate.c b/src/fcntl/posix_fallocate.c
new file mode 100644
index 0000000..80a65cb
--- /dev/null
+++ b/src/fcntl/posix_fallocate.c
@@ -0,0 +1,8 @@
+#include <fcntl.h>
+#include "syscall.h"
+
+int posix_fallocate(int fd, off_t base, off_t len)
+{
+	return -__syscall(SYS_fallocate, fd, 0, __SYSCALL_LL_E(base),
+		__SYSCALL_LL_E(len));
+}