From adb88e773b3897fa222b5d1bb8e46b2d6b424214 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 8 Sep 2012 00:33:04 -0400 Subject: [PATCH] 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. --- include/fcntl.h | 3 +++ src/fcntl/fallocate.c | 9 +++++++++ 2 files changed, 12 insertions(+) create mode 100644 src/fcntl/fallocate.c 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 +#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)); +}