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authorChristoph Hellwig <hch@lst.de>2021-07-14 16:23:19 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2021-08-23 01:25:40 -0400
commite24d12b7442afa9d41331a951fca467449ff1488 (patch)
treea2e55ca394f98a1d2c85ec68443e690f37523b60 /init/do_mounts.c
parente73f0f0ee7541171d89f2e2491130c7771ba58d3 (diff)
downloadlwn-e24d12b7442afa9d41331a951fca467449ff1488.tar.gz
lwn-e24d12b7442afa9d41331a951fca467449ff1488.zip
init: split get_fs_names
Split get_fs_names into one function that splits up the command line argument, and one that gets the list of all registered file systems. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'init/do_mounts.c')
-rw-r--r--init/do_mounts.c48
1 files changed, 26 insertions, 22 deletions
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 74aede860de7..ec32de3ad52b 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -338,30 +338,31 @@ __setup("rootflags=", root_data_setup);
__setup("rootfstype=", fs_names_setup);
__setup("rootdelay=", root_delay_setup);
-static void __init get_fs_names(char *page)
+static void __init split_fs_names(char *page, char *names)
{
- char *s = page;
-
- if (root_fs_names) {
- strcpy(page, root_fs_names);
- while (*s++) {
- if (s[-1] == ',')
- s[-1] = '\0';
- }
- } else {
- int len = get_filesystem_list(page);
- char *p, *next;
+ strcpy(page, root_fs_names);
+ while (*page++) {
+ if (page[-1] == ',')
+ page[-1] = '\0';
+ }
+ *page = '\0';
+}
- page[len] = '\0';
- for (p = page-1; p; p = next) {
- next = strchr(++p, '\n');
- if (*p++ != '\t')
- continue;
- while ((*s++ = *p++) != '\n')
- ;
- s[-1] = '\0';
- }
+static void __init get_all_fs_names(char *page)
+{
+ int len = get_filesystem_list(page);
+ char *s = page, *p, *next;
+
+ page[len] = '\0';
+ for (p = page - 1; p; p = next) {
+ next = strchr(++p, '\n');
+ if (*p++ != '\t')
+ continue;
+ while ((*s++ = *p++) != '\n')
+ ;
+ s[-1] = '\0';
}
+
*s = '\0';
}
@@ -411,7 +412,10 @@ void __init mount_block_root(char *name, int flags)
scnprintf(b, BDEVNAME_SIZE, "unknown-block(%u,%u)",
MAJOR(ROOT_DEV), MINOR(ROOT_DEV));
- get_fs_names(fs_names);
+ if (root_fs_names)
+ split_fs_names(fs_names, root_fs_names);
+ else
+ get_all_fs_names(fs_names);
retry:
for (p = fs_names; *p; p += strlen(p)+1) {
int err = do_mount_root(name, p, flags, root_mount_data);