Revert "Assemble: support assembling of a RAID0 being reshaped."

[thirdparty/mdadm.git] / sysfs.c

diff --git a/sysfs.c b/sysfs.c
index 5512a302001d587f0e82a3bfe52c77e478de5d5d..18f3df9a6ec3b5f4eff12011e0f585d265c7d290 100644 (file)
--- a/sysfs.c
+++ b/sysfs.c
@@ -413,7 +413,7 @@ int sysfs_set_str(struct mdinfo *sra, struct mdinfo *dev,
        n = write(fd, val, strlen(val));
        close(fd);
        if (n != strlen(val)) {
-               dprintf(Name ": failed to write '%s' to '%s' (%s)\n",
+               dprintf("failed to write '%s' to '%s' (%s)\n",
                        val, fname, strerror(errno));
                return -1;
        }
@@ -450,7 +450,7 @@ int sysfs_uevent(struct mdinfo *sra, char *event)
        n = write(fd, event, strlen(event));
        close(fd);
        if (n != (int)strlen(event)) {
-               dprintf(Name ": failed to write '%s' to '%s' (%s)\n",
+               dprintf("failed to write '%s' to '%s' (%s)\n",
                        event, fname, strerror(errno));
                return -1;
        }
@@ -513,6 +513,49 @@ int sysfs_get_ll(struct mdinfo *sra, struct mdinfo *dev,
        return n;
 }
 
+int sysfs_fd_get_two(int fd, unsigned long long *v1, unsigned long long *v2)
+{
+       /* two numbers in this sysfs file, either
+        *  NNN (NNN)
+        * or
+        *  NNN / NNN
+        */
+       char buf[80];
+       int n;
+       char *ep, *ep2;
+
+       lseek(fd, 0, 0);
+       n = read(fd, buf, sizeof(buf));
+       if (n <= 0)
+               return -2;
+       buf[n] = 0;
+       *v1 = strtoull(buf, &ep, 0);
+       if (ep == buf || (*ep != 0 && *ep != '\n' && *ep != ' '))
+               return -1;
+       while (*ep == ' ' || *ep == '/' || *ep == '(')
+               ep++;
+       *v2 = strtoull(ep, &ep2, 0);
+       if (ep2 == ep || (*ep2 != 0 && *ep2 != '\n' && *ep2 != ' ' && *ep2 != ')')) {
+               *v2 = *v1;
+               return 1;
+       }
+       return 2;
+}
+
+int sysfs_get_two(struct mdinfo *sra, struct mdinfo *dev,
+                 char *name, unsigned long long *v1, unsigned long long *v2)
+{
+       int n;
+       int fd;
+
+       fd = sysfs_get_fd(sra, dev, name);
+       if (fd < 0)
+               return -1;
+       n = sysfs_fd_get_two(fd, v1, v2);
+       close(fd);
+       return n;
+}
+
 int sysfs_fd_get_str(int fd, char *val, int size)
 {
        int n;
@@ -580,8 +623,7 @@ int sysfs_set_array(struct mdinfo *info, int vers)
                if ((vers % 100) < 2 ||
                    sysfs_set_str(info, NULL, "metadata_version",
                                  ver) < 0) {
-                       pr_err("This kernel does not "
-                               "support external metadata.\n");
+                       pr_err("This kernel does not support external metadata.\n");
                        return 1;
                }
        }
@@ -601,9 +643,7 @@ int sysfs_set_array(struct mdinfo *info, int vers)
                rc = sysfs_set_num(info, NULL, "array_size",
                                   info->custom_array_size/2);
                if (rc && errno == ENOENT) {
-                       pr_err("This kernel does not "
-                               "have the md/array_size attribute, "
-                               "the array may be larger than expected\n");
+                       pr_err("This kernel does not have the md/array_size attribute, the array may be larger than expected\n");
                        rc = 0;
                }
                rv |= rc;
@@ -639,7 +679,7 @@ int sysfs_add_disk(struct mdinfo *sra, struct mdinfo *sd, int resume)
                return rv;
 
        memset(nm, 0, sizeof(nm));
-       dname = devid2devnm(makedev(sd->disk.major, sd->disk.minor));
+       dname = devid2kname(makedev(sd->disk.major, sd->disk.minor));
        strcpy(sd->sys_name, "dev-");
        strcpy(sd->sys_name+4, dname);
 
@@ -838,9 +878,41 @@ int sysfs_freeze_array(struct mdinfo *sra)
        if (strcmp(buf, "frozen\n") == 0)
                /* Already frozen */
                return 0;
-       if (strcmp(buf, "idle\n") != 0)
+       if (strcmp(buf, "idle\n") != 0 && strcmp(buf, "recover\n") != 0)
                return -1;
        if (sysfs_set_str(sra, NULL, "sync_action", "frozen") < 0)
                return 0;
        return 1;
 }
+
+int sysfs_wait(int fd, int *msec)
+{
+       /* Wait up to '*msec' for fd to have an exception condition.
+        * if msec == NULL, wait indefinitely.
+        */
+       fd_set fds;
+       int n;
+       FD_ZERO(&fds);
+       FD_SET(fd, &fds);
+       if (msec == NULL)
+               n = select(fd+1, NULL, NULL, &fds, NULL);
+       else if (*msec < 0)
+               n = 0;
+       else {
+               struct timeval start, end, tv;
+               gettimeofday(&start, NULL);
+               if (*msec < 1000) {
+                       tv.tv_sec = 0;
+                       tv.tv_usec = (*msec)*1000;
+               } else {
+                       tv.tv_sec = (*msec)/1000;
+                       tv.tv_usec = 0;
+               }
+               n = select(fd+1, NULL, NULL, &fds, &tv);
+               gettimeofday(&end, NULL);
+               end.tv_sec -= start.tv_sec;
+               *msec -= (end.tv_sec * 1000 + end.tv_usec/1000
+                         - start.tv_usec/1000) + 1;
+       }
+       return n;
+}