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machined: when cloning a raw disk image, also set the NOCOW flag

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This commit is contained in:
Lennart Poettering
2015-01-08 23:13:45 +01:00
parent e45fc5e738
commit f2068bcce0
7 changed files with 20 additions and 10 deletions
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src/shared/copy.c
+6 -3
View File
@@ -359,7 +359,7 @@ int copy_file_fd(const char *from, int fdt, bool try_reflink) {
return r;
}
int copy_file(const char *from, const char *to, int flags, mode_t mode) {
int copy_file(const char *from, const char *to, int flags, mode_t mode, int chattr_flags) {
int fdt, r;
assert(from);
@@ -371,6 +371,9 @@ int copy_file(const char *from, const char *to, int flags, mode_t mode) {
return -errno;
}
if (chattr_flags != 0)
(void) chattr_fd(fdt, true, chattr_flags);
r = copy_file_fd(from, fdt, true);
if (r < 0) {
close(fdt);
@@ -386,7 +389,7 @@ int copy_file(const char *from, const char *to, int flags, mode_t mode) {
return 0;
}
int copy_file_atomic(const char *from, const char *to, mode_t mode, bool replace) {
int copy_file_atomic(const char *from, const char *to, mode_t mode, bool replace, int chattr_flags) {
_cleanup_free_ char *t;
int r;
@@ -397,7 +400,7 @@ int copy_file_atomic(const char *from, const char *to, mode_t mode, bool replace
if (r < 0)
return r;
r = copy_file(from, t, O_NOFOLLOW|O_EXCL, mode);
r = copy_file(from, t, O_NOFOLLOW|O_EXCL, mode, chattr_flags);
if (r < 0)
return r;
src/shared/copy.h
+2 -2
View File
@@ -25,8 +25,8 @@
#include <sys/types.h>
int copy_file_fd(const char *from, int to, bool try_reflink);
int copy_file(const char *from, const char *to, int flags, mode_t mode);
int copy_file_atomic(const char *from, const char *to, mode_t mode, bool replace);
int copy_file(const char *from, const char *to, int flags, mode_t mode, int chattr_flags);
int copy_file_atomic(const char *from, const char *to, mode_t mode, bool replace, int chattr_flags);
int copy_tree(const char *from, const char *to, bool merge);
int copy_tree_at(int fdf, const char *from, int fdt, const char *to, bool merge);
int copy_directory_fd(int dirfd, const char *to, bool merge);
src/shared/machine-image.c
+8 -1
View File
@@ -20,6 +20,7 @@
***/
#include <sys/statfs.h>
#include <linux/fs.h>
#include <fcntl.h>
#include "strv.h"
@@ -440,7 +441,7 @@ int image_clone(Image *i, const char *new_name, bool read_only) {
case IMAGE_GPT:
new_path = strappenda("/var/lib/container/", new_name, ".gpt");
r = copy_file_atomic(i->path, new_path, read_only ? 0444 : 0644, false);
r = copy_file_atomic(i->path, new_path, read_only ? 0444 : 0644, false, FS_NOCOW_FL);
break;
default:
@@ -477,6 +478,12 @@ int image_read_only(Image *i, bool b) {
if (chmod(i->path, (st.st_mode & 0444) | (b ? 0000 : 0200)) < 0)
return -errno;
/* If the images is now read-only, it's a good time to
* defrag it, given that no write patterns will
* fragment it again. */
if (b)
(void) btrfs_defrag(i->path);
break;
}