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authorLennart Poettering <lennart@poettering.net>2014-12-12 16:24:33 +0100
committerLennart Poettering <lennart@poettering.net>2014-12-12 17:30:25 +0100
commit7430ec6ac08f2c0416d9f806964c46b30f3862b2 (patch)
tree2b42cca3d6b3cc117aa446718585c1a21c8c18aa /src/shared/copy.c
parent19ee32dc4d337a033c95c7d3302666f2ea4340bd (diff)
copy: use btrfs reflinking only whe we know we copy full files
Diffstat (limited to 'src/shared/copy.c')
-rw-r--r--src/shared/copy.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/src/shared/copy.c b/src/shared/copy.c
index 233dbbccc7..b4a85c7bff 100644
--- a/src/shared/copy.c
+++ b/src/shared/copy.c
@@ -25,7 +25,7 @@
#include "btrfs-util.h"
#include "copy.h"
-int copy_bytes(int fdf, int fdt, off_t max_bytes) {
+int copy_bytes(int fdf, int fdt, off_t max_bytes, bool try_reflink) {
bool try_sendfile = true;
int r;
@@ -33,10 +33,10 @@ int copy_bytes(int fdf, int fdt, off_t max_bytes) {
assert(fdt >= 0);
/* Try btrfs reflinks first. */
- if (max_bytes == (off_t) -1) {
+ if (try_reflink && max_bytes == (off_t) -1) {
r = btrfs_reflink(fdf, fdt);
if (r >= 0)
- return 0;
+ return r;
}
for (;;) {
@@ -131,7 +131,7 @@ static int fd_copy_regular(int df, const char *from, const struct stat *st, int
if (fdt < 0)
return -errno;
- r = copy_bytes(fdf, fdt, (off_t) -1);
+ r = copy_bytes(fdf, fdt, (off_t) -1, true);
if (r < 0) {
unlinkat(dt, to, 0);
return r;
@@ -318,7 +318,7 @@ int copy_tree_fd(int dirfd, const char *to, bool merge) {
return fd_copy_directory(dirfd, NULL, &st, AT_FDCWD, to, st.st_dev, merge);
}
-int copy_file_fd(const char *from, int fdt) {
+int copy_file_fd(const char *from, int fdt, bool try_reflink) {
_cleanup_close_ int fdf = -1;
assert(from);
@@ -328,7 +328,7 @@ int copy_file_fd(const char *from, int fdt) {
if (fdf < 0)
return -errno;
- return copy_bytes(fdf, fdt, (off_t) -1);
+ return copy_bytes(fdf, fdt, (off_t) -1, try_reflink);
}
int copy_file(const char *from, const char *to, int flags, mode_t mode) {
@@ -341,7 +341,7 @@ int copy_file(const char *from, const char *to, int flags, mode_t mode) {
if (fdt < 0)
return -errno;
- r = copy_file_fd(from, fdt);
+ r = copy_file_fd(from, fdt, true);
if (r < 0) {
close(fdt);
unlink(to);