sysfs: Parse array_state in sysfs_read()
Rather than copying in the array_state string, parse it and use an enum to indicate the state. Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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f22d6cde7c
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5e4ca8bb82
2
Manage.c
2
Manage.c
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@ -929,7 +929,7 @@ int Manage_add(int fd, int tfd, struct mddev_dev *dv,
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return -1;
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}
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if (strncmp(mdp->sysfs_array_state, "readonly", 8) != 0) {
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if (mdp->array_state != ARRAY_READONLY) {
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sysfs_free(mdp);
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pr_err("%s is not readonly, cannot add journal.\n", devname);
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return -1;
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17
maps.c
17
maps.c
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@ -139,6 +139,23 @@ mapping_t consistency_policies[] = {
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{ NULL, 0}
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};
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mapping_t sysfs_array_states[] = {
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/*
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* Beware map_name() uses strcmp() so active-idle must come before
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* active, to be detected correctly.
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*/
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{ "active-idle", ARRAY_ACTIVE_IDLE },
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{ "active", ARRAY_ACTIVE },
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{ "clear", ARRAY_CLEAR },
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{ "inactive", ARRAY_INACTIVE },
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{ "suspended", ARRAY_SUSPENDED },
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{ "readonly", ARRAY_READONLY },
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{ "read-auto", ARRAY_READ_AUTO },
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{ "clean", ARRAY_CLEAN },
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{ "write-pending", ARRAY_WRITE_PENDING },
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{ NULL, 0 }
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};
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char *map_num(mapping_t *map, int num)
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{
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while (map->name) {
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17
mdadm.h
17
mdadm.h
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@ -335,8 +335,18 @@ struct mdinfo {
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int prev_state, curr_state, next_state;
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/* info read from sysfs */
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char sysfs_array_state[20];
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enum {
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ARRAY_CLEAR,
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ARRAY_INACTIVE,
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ARRAY_SUSPENDED,
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ARRAY_READONLY,
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ARRAY_READ_AUTO,
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ARRAY_CLEAN,
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ARRAY_ACTIVE,
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ARRAY_WRITE_PENDING,
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ARRAY_ACTIVE_IDLE,
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ARRAY_UNKNOWN_STATE,
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} array_state;
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struct md_bb bb;
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};
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@ -716,7 +726,8 @@ extern int restore_stripes(int *dest, unsigned long long *offsets,
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extern char *map_num(mapping_t *map, int num);
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extern int map_name(mapping_t *map, char *name);
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extern mapping_t r5layout[], r6layout[], pers[], modes[], faultylayout[], consistency_policies[];
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extern mapping_t r5layout[], r6layout[], pers[], modes[], faultylayout[];
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extern mapping_t consistency_policies[], sysfs_array_states[];
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extern char *map_dev_preferred(int major, int minor, int create,
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char *prefer);
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9
sysfs.c
9
sysfs.c
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@ -247,11 +247,12 @@ struct mdinfo *sysfs_read(int fd, char *devnm, unsigned long options)
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if (options & GET_ARRAY_STATE) {
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strcpy(base, "array_state");
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if (load_sys(fname, sra->sysfs_array_state,
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sizeof(sra->sysfs_array_state)))
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if (load_sys(fname, buf, sizeof(buf)))
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goto abort;
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} else
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sra->sysfs_array_state[0] = 0;
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sra->array_state = map_name(sysfs_array_states, buf);
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if (sra->array_state == UnSet)
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sra->array_state = ARRAY_UNKNOWN_STATE;
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}
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if (options & GET_CONSISTENCY_POLICY) {
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strcpy(base, "consistency_policy");
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