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authorNeilBrown <neilb@suse.de>2023-03-13 14:42:58 +1100
committerJes Sorensen <jes@trained-monkey.org>2023-03-19 12:33:16 -0400
commiteb45d0add7cf2918f838bec2d93d99cf2d9c662f (patch)
tree43ca938fff7fa3cd5ed84ed4e932d16301fddf54
parent566844b93e6823a04ed65827ba3e03cb123b3a03 (diff)
downloadmdadm-eb45d0add7cf2918f838bec2d93d99cf2d9c662f.tar.gz
Use existence of /etc/initrd-release to detect initrd.
Since v183, systemd has used the existence of /etc/initrd-release to detect if it is running in an initrd, rather than looking at the magic number of the root filesystem's device. It is time for mdadm to do the same. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
-rw-r--r--util.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/util.c b/util.c
index 9f1e1f7..509fb43 100644
--- a/util.c
+++ b/util.c
@@ -2227,15 +2227,7 @@ int continue_via_systemd(char *devnm, char *service_name)
int in_initrd(void)
{
- /* This is based on similar function in systemd. */
- struct statfs s;
- /* statfs.f_type is signed long on s390x and MIPS, causing all
- sorts of sign extension problems with RAMFS_MAGIC being
- defined as 0x858458f6 */
- return statfs("/", &s) >= 0 &&
- ((unsigned long)s.f_type == TMPFS_MAGIC ||
- ((unsigned long)s.f_type & 0xFFFFFFFFUL) ==
- ((unsigned long)RAMFS_MAGIC & 0xFFFFFFFFUL));
+ return access("/etc/initrd-release", F_OK) >= 0;
}
void reopen_mddev(int mdfd)