diff options
author | Lennart Poettering <lennart@poettering.net> | 2011-03-03 23:03:26 +0100 |
---|---|---|
committer | Lennart Poettering <lennart@poettering.net> | 2011-03-03 23:03:26 +0100 |
commit | 2b590e135f53a1bd3e771bdc555f7bf28c4cd232 (patch) | |
tree | 692dcb53426de099bc71ab5ed111d62823e74f2e /src/readahead-common.c | |
parent | c1b664d055276f47f152fe90d1dd765c384271bc (diff) | |
download | systemd-2b590e135f53a1bd3e771bdc555f7bf28c4cd232.tar.gz |
readahead: disable collector automatically on read-only media
Diffstat (limited to 'src/readahead-common.c')
-rw-r--r-- | src/readahead-common.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/readahead-common.c b/src/readahead-common.c index 85e3227f6e..e991dfd05d 100644 --- a/src/readahead-common.c +++ b/src/readahead-common.c @@ -114,6 +114,41 @@ finish: return b; } +int fs_on_read_only(const char *p) { + struct stat st; + struct udev *udev = NULL; + struct udev_device *udev_device = NULL; + bool b = false; + const char *read_only; + + assert(p); + + if (stat(p, &st) < 0) + return -errno; + + if (major(st.st_dev) == 0) + return false; + + if (!(udev = udev_new())) + return -ENOMEM; + + if (!(udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev))) + goto finish; + + if ((read_only = udev_device_get_sysattr_value(udev_device, "ro"))) + if ((b = streq(read_only, "1"))) + goto finish; + +finish: + if (udev_device) + udev_device_unref(udev_device); + + if (udev) + udev_unref(udev); + + return b; +} + bool enough_ram(void) { struct sysinfo si; |