about summary refs log tree commit diff
diff options
context:
space:
mode:
authorRich Felker <dalias@aerifal.cx>2012-09-08 00:33:04 -0400
committerRich Felker <dalias@aerifal.cx>2012-09-08 00:33:04 -0400
commitadb88e773b3897fa222b5d1bb8e46b2d6b424214 (patch)
treebdc42d9e8aebc0ef96a8f6c1029a392f57a02e56
parent5271ff46b9e983bec5fd9ab79d5aaf096fa54157 (diff)
downloadmusl-adb88e773b3897fa222b5d1bb8e46b2d6b424214.tar.gz
musl-adb88e773b3897fa222b5d1bb8e46b2d6b424214.tar.xz
musl-adb88e773b3897fa222b5d1bb8e46b2d6b424214.zip
add fallocate (nonstandardized) function
this is equivalent to posix_fallocate except that it has an extra
mode/flags argument to control its behavior, and stores the error in
errno rather than returning an error code.
-rw-r--r--include/fcntl.h3
-rw-r--r--src/fcntl/fallocate.c9
2 files changed, 12 insertions, 0 deletions
diff --git a/include/fcntl.h b/include/fcntl.h
index 4123d01d..68baf7a2 100644
--- a/include/fcntl.h
+++ b/include/fcntl.h
@@ -116,10 +116,13 @@ struct f_owner_ex {
 	int type;
 	pid_t pid;
 };
+#define FALLOC_FL_KEEP_SIZE 1
+#define FALLOC_FL_PUNCH_HOLE 2
 #define SPLICE_F_MOVE 1
 #define SPLICE_F_NONBLOCK 2
 #define SPLICE_F_MORE 4
 #define SPLICE_F_GIFT 8
+int fallocate(int, int, off_t, off_t);
 ssize_t vmsplice(int, const struct iovec *, size_t, unsigned);
 ssize_t splice(int, off_t *, int, off_t *, size_t, unsigned);
 #define loff_t off_t
diff --git a/src/fcntl/fallocate.c b/src/fcntl/fallocate.c
new file mode 100644
index 00000000..9146350e
--- /dev/null
+++ b/src/fcntl/fallocate.c
@@ -0,0 +1,9 @@
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include "syscall.h"
+
+int fallocate(int fd, int mode, off_t base, off_t len)
+{
+	return syscall(SYS_fallocate, fd, mode, __SYSCALL_LL_E(base),
+		__SYSCALL_LL_E(len));
+}