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authorLennart Poettering <lennart@poettering.net>2014-12-27 18:46:36 +0100
committerLennart Poettering <lennart@poettering.net>2014-12-28 02:08:40 +0100
commitd7b8eec7dc7fe307d3a08b32cf1a9ad4276ce6d5 (patch)
treebb72bb696e949844b8bed240b061a4bed4f8fb8b /src/tmpfiles
parentebd93cb684806ac0f352139e69ac8f53eb49f5e4 (diff)
tmpfiles: add new line type 'v' for creating btrfs subvolumes
Diffstat (limited to 'src/tmpfiles')
-rw-r--r--src/tmpfiles/tmpfiles.c28
1 files changed, 23 insertions, 5 deletions
diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
index 44ea51e26b..b830850879 100644
--- a/src/tmpfiles/tmpfiles.c
+++ b/src/tmpfiles/tmpfiles.c
@@ -54,6 +54,8 @@
#include "specifier.h"
#include "build.h"
#include "copy.h"
+#include "selinux-util.h"
+#include "btrfs-util.h"
/* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
* them in the file system. This is intended to be used to create
@@ -66,6 +68,7 @@ typedef enum ItemType {
TRUNCATE_FILE = 'F',
CREATE_DIRECTORY = 'd',
TRUNCATE_DIRECTORY = 'D',
+ CREATE_SUBVOLUME = 'v',
CREATE_FIFO = 'p',
CREATE_SYMLINK = 'L',
CREATE_CHAR_DEVICE = 'c',
@@ -758,17 +761,27 @@ static int create_item(Item *i) {
break;
- case TRUNCATE_DIRECTORY:
case CREATE_DIRECTORY:
+ case TRUNCATE_DIRECTORY:
+ case CREATE_SUBVOLUME:
- RUN_WITH_UMASK(0000) {
+ RUN_WITH_UMASK(0000)
mkdir_parents_label(i->path, 0755);
- r = mkdir_label(i->path, i->mode);
+
+ if (i->type == CREATE_SUBVOLUME) {
+ RUN_WITH_UMASK((~i->mode) & 0777)
+ r = btrfs_subvol_make(i->path);
+ } else
+ r = 0;
+
+ if (i->type == CREATE_DIRECTORY || r == -ENOTTY) {
+ RUN_WITH_UMASK(0000)
+ r = mkdir_label(i->path, i->mode);
}
if (r < 0) {
if (r != -EEXIST)
- return log_error_errno(r, "Failed to create directory %s: %m", i->path);
+ return log_error_errno(r, "Failed to create directory or subvolume %s: %m", i->path);
if (stat(i->path, &st) < 0)
return log_error_errno(errno, "stat(%s) failed: %m", i->path);
@@ -970,6 +983,7 @@ static int remove_item_instance(Item *i, const char *instance) {
case CREATE_FILE:
case TRUNCATE_FILE:
case CREATE_DIRECTORY:
+ case CREATE_SUBVOLUME:
case CREATE_FIFO:
case CREATE_SYMLINK:
case CREATE_BLOCK_DEVICE:
@@ -1014,6 +1028,7 @@ static int remove_item(Item *i) {
case CREATE_FILE:
case TRUNCATE_FILE:
case CREATE_DIRECTORY:
+ case CREATE_SUBVOLUME:
case CREATE_FIFO:
case CREATE_SYMLINK:
case CREATE_CHAR_DEVICE:
@@ -1091,6 +1106,7 @@ static int clean_item(Item *i) {
switch (i->type) {
case CREATE_DIRECTORY:
+ case CREATE_SUBVOLUME:
case TRUNCATE_DIRECTORY:
case IGNORE_PATH:
case COPY_FILES:
@@ -1289,6 +1305,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
case CREATE_FILE:
case TRUNCATE_FILE:
case CREATE_DIRECTORY:
+ case CREATE_SUBVOLUME:
case TRUNCATE_DIRECTORY:
case CREATE_FIFO:
case IGNORE_PATH:
@@ -1429,6 +1446,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
} else
i->mode =
i->type == CREATE_DIRECTORY ||
+ i->type == CREATE_SUBVOLUME ||
i->type == TRUNCATE_DIRECTORY ? 0755 : 0644;
if (age && !streq(age, "-")) {
@@ -1636,7 +1654,7 @@ static int read_config_file(const char *fn, bool ignore_enoent) {
continue;
HASHMAP_FOREACH(j, items, iter) {
- if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY)
+ if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY && j->type != CREATE_SUBVOLUME)
continue;
if (path_equal(j->path, i->path)) {