#include <ctype.h>
#define mapnames(base) { base, base ".new", base ".lock"}
-char *mapname[3][3] = {
- mapnames(VAR_RUN "/map"),
- mapnames("/var/run/mdadm.map"),
- mapnames(ALT_RUN "/" ALT_MAPFILE)
+char *mapname[2][3] = {
+ mapnames(MAP_DIR "/" MAP_FILE),
+ mapnames("/var/run/mdadm.map")
};
-char *mapdir[3] = { VAR_RUN, NULL, ALT_RUN };
+char *mapdir[2] = { MAP_DIR, NULL };
-int mapmode[3] = { O_RDONLY, O_RDWR|O_CREAT, O_RDWR|O_CREAT | O_TRUNC };
+int mapmode[3] = { O_RDONLY, O_RDWR|O_CREAT, O_RDWR|O_CREAT|O_TRUNC };
char *mapsmode[3] = { "r", "w", "w"};
FILE *open_map(int modenum, int *choice)
{
int i;
- for (i = 0 ; i < 3 ; i++) {
+ for (i = 0 ; i < 2 ; i++) {
int fd;
- if ((mapmode[modenum] & O_CREAT) &&
- mapdir[modenum])
+ if ((mapmode[modenum] & O_CREAT) && mapdir[i])
/* Attempt to create directory, don't worry about
* failure.
*/
- mkdir(mapdir[modenum], 0755);
+ mkdir(mapdir[i], 0755);
fd = open(mapname[i][modenum], mapmode[modenum], 0600);
if (fd >= 0) {
*choice = i;
static int lwhich = 0;
int map_lock(struct map_ent **melp)
{
- if (lf == NULL) {
+ while (lf == NULL) {
+ struct stat buf;
lf = open_map(2, &lwhich);
if (lf == NULL)
return -1;
lf = NULL;
return -1;
}
+ if (fstat(fileno(lf), &buf) != 0 ||
+ buf.st_nlink == 0) {
+ /* The owner of the lock unlinked it,
+ * so we have a lock on a stale file,
+ * try again
+ */
+ fclose(lf);
+ lf = NULL;
+ }
}
if (*melp)
map_free(*melp);
void map_unlock(struct map_ent **melp)
{
if (lf) {
- flock(fileno(lf), LOCK_UN);
+ /* must unlink before closing the file,
+ * as only the owner of the lock may
+ * unlink the file
+ */
+ unlink(mapname[lwhich][2]);
fclose(lf);
}
- unlink(mapname[lwhich][2]);
lf = NULL;
}
}
}
+void map_remove(struct map_ent **mapp, int devnum)
+{
+ if (devnum == NoMdDev)
+ return;
+
+ map_delete(mapp, devnum);
+ map_write(*mapp);
+ map_free(*mapp);
+}
+
struct map_ent *map_by_uuid(struct map_ent **map, int uuid[4])
{
struct map_ent *mp;
}
for (md = mdstat ; md ; md = md->next) {
- struct mdinfo *sra = sysfs_read(-1, md->devnum, GET_DEVS|SKIP_GONE_DEVS);
+ struct mdinfo *sra = sysfs_read(-1, md->devnum, GET_DEVS);
struct mdinfo *sd;
if (!sra)
for (md = mdstat ; md ; md = md->next) {
struct mdinfo *sra = sysfs_read(-1, md->devnum,
GET_VERSION);
- sysfs_uevent(sra, "change");
+ if (sra)
+ sysfs_uevent(sra, "change");
sysfs_free(sra);
}
map_free(map);