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author | Dan Williams <dan.j.williams@intel.com> | 2009-10-13 17:08:33 -0700 |
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committer | Dan Williams <dan.j.williams@intel.com> | 2009-10-13 17:41:58 -0700 |
commit | b928b5a0384e7181425a282a0586cbbb3c85fbc3 (patch) | |
tree | 38d0603c2cdbcac85000076c2a8c05994c17f6e1 /mdmon.c | |
parent | 96a8270d46faab599b41f1cf78b4331b44c5a6be (diff) | |
download | mdadm-b928b5a0384e7181425a282a0586cbbb3c85fbc3.tar.gz mdadm-b928b5a0384e7181425a282a0586cbbb3c85fbc3.tar.xz mdadm-b928b5a0384e7181425a282a0586cbbb3c85fbc3.zip |
mdmon: exec(2) when the switchroot argument is not "/"
Try to execute mdmon from the target namespace. When used for initramfs
handovers we need to drop all references to the initramfs filesystem for
that memory to be freed.
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'mdmon.c')
-rw-r--r-- | mdmon.c | 23 |
1 files changed, 23 insertions, 0 deletions
@@ -369,6 +369,29 @@ int mdmon(char *devname, int devnum, int scan, char *switchroot) dprintf("starting mdmon for %s in %s\n", devname, switchroot ? : "/"); + + /* try to spawn mdmon instances from the target file system */ + if (switchroot && strcmp(switchroot, "/") != 0) { + char path[1024]; + pid_t pid; + + sprintf(path, "%s/sbin/mdmon", switchroot); + switch (fork()) { + case 0: + execl(path, "mdmon", devname, NULL); + exit(1); + case -1: + return 1; + default: + pid = wait(&status); + if (pid > -1 && WIFEXITED(status) && + WEXITSTATUS(status) == 0) + return 0; + else + return 1; + } + } + mdfd = open_dev(devnum); if (mdfd < 0) { fprintf(stderr, "mdmon: %s: %s\n", devname, |