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author | Rafał Miłecki <rafal@milecki.pl> | 2020-05-02 13:29:08 +0200 |
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committer | Rafał Miłecki <rafal@milecki.pl> | 2020-05-02 13:31:16 +0200 |
commit | d70774de24413f91087e9c3c873cf7a4ec3df813 (patch) | |
tree | c94620e8ccb0fdd7a65c660c659c1c3e17af3e54 | |
parent | 32db27dc8b2b55da2de5e64b1548adc0fb475c13 (diff) | |
download | fstools-d70774de24413f91087e9c3c873cf7a4ec3df813.tar.gz |
block: add some basic extroot documentation
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
-rw-r--r-- | block.c | 16 |
1 files changed, 16 insertions, 0 deletions
@@ -1374,6 +1374,15 @@ static int test_fs_support(const char *name) return rv; } +/** + * Check if mounted partition is a valid extroot + * + * @path target mount point + * + * Valid extroot partition has to contain /etc/.extroot-uuid with UUID of root + * device. This function reads UUID and verifies it OR writes UUID to + * .extroot-uuid if it doesn't exist yet (first extroot usage). + */ static int check_extroot(char *path) { struct probe_info *pr = NULL; @@ -1528,6 +1537,12 @@ static int mount_extroot(char *cfg) return err; } +/** + * Look for extroot config and mount it if present + * + * Look for /etc/config/fstab on all supported partitions and use it for + * mounting extroot if specified. + */ static int main_extroot(int argc, char **argv) { struct probe_info *pr; @@ -1601,6 +1616,7 @@ static int main_extroot(int argc, char **argv) } #endif + /* As a last resort look for /etc/config/fstab on "rootfs" partition */ return mount_extroot(NULL); } |