]> git.ipfire.org Git - thirdparty/mdadm.git/blobdiff - mdadm.c
mdadm-0.8.2
[thirdparty/mdadm.git] / mdadm.c
diff --git a/mdadm.c b/mdadm.c
index e1a869ebad540bfe3584d4c2fb298e978ebb3343..2ca1b4bfde2fd9e329658685999d08c86f4a1434 100644 (file)
--- a/mdadm.c
+++ b/mdadm.c
@@ -34,7 +34,7 @@ int open_mddev(char *dev)
 {
        int mdfd = open(dev, O_RDWR, 0);
        if (mdfd < 0)
-               fprintf(stderr,Name ": error opening %s: %s\n",
+               fprintf(stderr, Name ": error opening %s: %s\n",
                        dev, strerror(errno));
        else if (md_get_version(mdfd) <= 0) {
                fprintf(stderr, Name ": %s does not appear to be an md device\n",
@@ -49,12 +49,12 @@ int open_mddev(char *dev)
 
 int main(int argc, char *argv[])
 {
-       char mode = '\0';
+       int mode = 0;
        int opt;
+       int option_index;
        char *help_text;
        char *c;
        int rv;
-       int i;
 
        int chunk = 0;
        int size = 0;
@@ -89,36 +89,22 @@ int main(int argc, char *argv[])
        ident.super_minor= -1;
        ident.devices=0;
 
-       while ((opt=getopt_long(argc, argv,
+       while ((option_index = -1) ,
+              (opt=getopt_long(argc, argv,
                                short_options, long_options,
-                               NULL)) != -1) {
-
+                               &option_index)) != -1) {
+               int newmode = mode;
+               /* firstly, so mode-independant options */
                switch(opt) {
-               case '@': /* just incase they say --manage */
-               case 'A':
-               case 'B':
-               case 'C':
-               case 'D':
-               case 'E':
-               case 'F':
-               case 'H':
-                       /* setting mode - only once */
-                       if (mode) {
-                               fprintf(stderr, Name ": --%s/-%c not allowed, mode already set to %s\n",
-                                       long_options[opt-'A'+1].name,
-                                       long_options[opt-'A'+1].val,
-                                       long_options[mode-'A'+1].name);
-                               exit(2);
-                       }
-                       mode = opt;
-                       continue;
-
                case 'h':
                        help_text = Help;
                        switch (mode) {
-                       case 'C': help_text = Help_create; break;
-                       case 'B': help_text = Help_build; break;
-                       case 'A': help_text = Help_assemble; break;
+                       case ASSEMBLE : help_text = Help_assemble; break;
+                       case BUILD    : help_text = Help_build; break;
+                       case CREATE   : help_text = Help_create; break;
+                       case MANAGE   : help_text = Help_manage; break;
+                       case MISC     : help_text = Help_misc; break;
+                       case MONITOR  : help_text = Help_monitor; break;
                        }
                        fputs(help_text,stderr);
                        exit(0);
@@ -133,18 +119,83 @@ int main(int argc, char *argv[])
                case 'b': brief = 1;
                        continue;
 
-               case 1: /* an undecorated option - must be a device name.
-                        * Depending on mode, it could be that:
-                        *    All devices listed are "md" devices : --Detail, -As
-                        *    No devices are "md" devices : --Examine
-                        *    First device is "md", others are component: -A,-B,-C
-                        * Only accept on device before mode is determined.
-                        *  If mode is @, then require devmode for other devices.
-                        */
-                       if (devs_found > 0 && !mode ) {
-                               fprintf(stderr, Name ": Must give mode flag before second device name at %s\n", optarg);
-                               exit(2);
+               case ':':
+               case '?':
+                       fputs(Usage, stderr);
+                       exit(2);
+               }
+               /* second, figure out the mode.
+                * Some options force the mode.  Others
+                * set the mode if it isn't already 
+                */
+
+               switch(opt) {
+               case '@': /* just incase they say --manage */
+                       newmode = MANAGE; break;
+               case 'a':
+               case 'r':
+               case 'f':
+               case 1 : if (!mode) newmode = MANAGE; break;
+
+               case 'A': newmode = ASSEMBLE; break;
+               case 'B': newmode = BUILD; break;
+               case 'C': newmode = CREATE; break;
+               case 'F': newmode = MONITOR;break;
+
+               case '#':
+               case 'D':
+               case 'E':
+               case 'Q': newmode = MISC; break;
+               case 'R':
+               case 'S':
+               case 'o':
+               case 'w':
+               case 'K': if (!mode) newmode = MISC; break;
+               }
+               if (mode && newmode == mode) {
+                       /* everybody happy ! */
+               } else if (mode && newmode != mode) {
+                       /* not allowed.. */
+                       fprintf(stderr, Name ": ");
+                       if (option_index >= 0)
+                               fprintf(stderr, "--%s", long_options[option_index].name);
+                       else
+                               fprintf(stderr, "-%c", opt);
+                       fprintf(stderr, " would set mode to %s, but it is already %s.\n",
+                               map_num(modes, newmode),
+                               map_num(modes, mode));
+                       exit(2);
+               } else if (!mode && newmode) {
+                       mode = newmode;
+               } else {
+                       /* special case of -c --help */
+                       if (opt == 'c' && 
+                           ( strncmp(optarg, "--h", 3)==0 ||
+                             strncmp(optarg, "-h", 2)==0)) {
+                               fputs(Help_config, stderr);
+                               exit(0);
                        }
+                       if (option_index >= 0)
+                               fprintf(stderr, "--%s", long_options[option_index].name);
+                       else
+                               fprintf(stderr, "-%c", opt);
+                       fprintf(stderr, " does not set the mode, and so cannot be first.\n");
+                       exit(2);
+               }
+
+               /* if we just set the mode, then done */
+               switch(opt) {
+               case '@':
+               case '#':
+               case 'A':
+               case 'B':
+               case 'C':
+               case 'F':
+                       continue;
+               }
+               if (opt == 1) {
+                       /* an undecorated option - must be a device name.
+                        */
                        if (devs_found > 0 && mode == '@' && !devmode) {
                                fprintf(stderr, Name ": Must give on of -a/-r/-f for subsequent devices at %s\n", optarg);
                                exit(2);
@@ -162,22 +213,14 @@ int main(int argc, char *argv[])
                        
                        devs_found++;
                        continue;
-
-               case ':':
-               case '?':
-                       fputs(Usage, stderr);
-                       exit(2);
-               default:
-                       /* force mode setting - @==manage if nothing else */
-                       if (!mode) mode = '@';
                }
 
                /* We've got a mode, and opt is now something else which
                 * could depend on the mode */
 #define O(a,b) ((a<<8)|b)
                switch (O(mode,opt)) {
-               case O('C','c'):
-               case O('B','c'): /* chunk or rounding */
+               case O(CREATE,'c'):
+               case O(BUILD,'c'): /* chunk or rounding */
                        if (chunk) {
                                fprintf(stderr, Name ": chunk/rounding may only be specified once. "
                                        "Second value is %s.\n", optarg);
@@ -191,7 +234,7 @@ int main(int argc, char *argv[])
                        }
                        continue;
 
-               case O('C','z'): /* size */
+               case O(CREATE,'z'): /* size */
                        if (size) {
                                fprintf(stderr, Name ": size may only be specified once. "
                                        "Second value is %s.\n", optarg);
@@ -205,8 +248,8 @@ int main(int argc, char *argv[])
                        }
                        continue;
 
-               case O('C','l'):
-               case O('B','l'): /* set raid level*/
+               case O(CREATE,'l'):
+               case O(BUILD,'l'): /* set raid level*/
                        if (level != -10) {
                                fprintf(stderr, Name ": raid level may only be set once.  "
                                        "Second value is %s.\n", optarg);
@@ -218,20 +261,20 @@ int main(int argc, char *argv[])
                                        optarg);
                                exit(2);
                        }
-                       if (level > 0 && mode == 'B') {
+                       if (level != 0 && level != -1 && mode == BUILD) {
                                fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
                                        optarg);
                                exit(2);
                        }
-                       if (sparedisks > 0 && level < 1) {
-                               fprintf(stderr, Name ": raid level %s is incompatible with spare-disks setting.\n",
+                       if (sparedisks > 0 && level < 1 && level >= -1) {
+                               fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
                                        optarg);
                                exit(2);
                        }
                        ident.level = level;
                        continue;
 
-               case O('C','p'): /* raid5 layout */
+               case O(CREATE,'p'): /* raid5 layout */
                        if (layout >= 0) {
                                fprintf(stderr,Name ": layout may only be sent once.  "
                                        "Second value was %s\n", optarg);
@@ -257,48 +300,48 @@ int main(int argc, char *argv[])
                        }
                        continue;
 
-               case O('C','n'):
-               case O('B','n'): /* number of raid disks */
+               case O(CREATE,'n'):
+               case O(BUILD,'n'): /* number of raid disks */
                        if (raiddisks) {
-                               fprintf(stderr, Name ": raid-disks set twice: %d and %s\n",
+                               fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
                                        raiddisks, optarg);
                                exit(2);
                        }
                        raiddisks = strtol(optarg, &c, 10);
                        if (!optarg[0] || *c || raiddisks<=0 || raiddisks > MD_SB_DISKS) {
-                               fprintf(stderr, Name ": invalid number of raid disks: %s\n",
+                               fprintf(stderr, Name ": invalid number of raid devices: %s\n",
                                        optarg);
                                exit(2);
                        }
                        ident.raid_disks = raiddisks;
                        continue;
 
-               case O('C','x'): /* number of spare (eXtra) discs */
+               case O(CREATE,'x'): /* number of spare (eXtra) discs */
                        if (sparedisks) {
-                               fprintf(stderr,Name ": spare-disks set twice: %d and %s\n",
+                               fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
                                        sparedisks, optarg);
                                exit(2);
                        }
-                       if (level > -10 && level < 1) {
-                               fprintf(stderr, Name ": spare-disks setting is incompatible with raid level %d\n",
+                       if (level > -10 && level <= 0 && level >= -1) {
+                               fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
                                        level);
                                exit(2);
                        }
                        sparedisks = strtol(optarg, &c, 10);
                        if (!optarg[0] || *c || sparedisks < 0 || sparedisks > MD_SB_DISKS - raiddisks) {
-                               fprintf(stderr, Name ": invalid number of spare disks: %s\n",
+                               fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
                                        optarg);
                                exit(2);
                        }
                        continue;
-               case O('C','f'): /* force honouring of device list */
-               case O('A','f'): /* force assembly */
-               case O('H','f'): /* force zero */
+               case O(CREATE,'f'): /* force honouring of device list */
+               case O(ASSEMBLE,'f'): /* force assembly */
+               case O(MISC,'f'): /* force zero */
                        force=1;
                        continue;
 
                        /* now for the Assemble options */
-               case O('A','u'): /* uuid of array */
+               case O(ASSEMBLE,'u'): /* uuid of array */
                        if (ident.uuid_set) {
                                fprintf(stderr, Name ": uuid cannot be set twice.  "
                                        "Second value %s.\n", optarg);
@@ -312,7 +355,7 @@ int main(int argc, char *argv[])
                        }
                        continue;
 
-               case O('A','m'): /* super-minor for array */
+               case O(ASSEMBLE,'m'): /* super-minor for array */
                        if (ident.super_minor >= 0) {
                                fprintf(stderr, Name ": super-minor cannot be set twice.  "
                                        "Second value: %s.\n", optarg);
@@ -325,8 +368,8 @@ int main(int argc, char *argv[])
                        }
                        continue;
 
-               case O('A','c'): /* config file */
-               case O('F','c'):
+               case O(ASSEMBLE,'c'): /* config file */
+               case O(MONITOR,'c'):
                        if (configfile) {
                                fprintf(stderr, Name ": configfile cannot be set twice.  "
                                        "Second value is %s.\n", optarg);
@@ -335,12 +378,13 @@ int main(int argc, char *argv[])
                        configfile = optarg;
                        /* FIXME possibly check that config file exists.  Even parse it */
                        continue;
-               case O('A','s'): /* scan */
-               case O('E','s'):
+               case O(ASSEMBLE,'s'): /* scan */
+               case O(MISC,'s'):
+               case O(MONITOR,'s'):
                        scan = 1;
                        continue;
 
-               case O('F','m'): /* mail address */
+               case O(MONITOR,'m'): /* mail address */
                        if (mailaddr)
                                fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
                                        optarg);
@@ -348,7 +392,7 @@ int main(int argc, char *argv[])
                                mailaddr = optarg;
                        continue;
 
-               case O('F','p'): /* alert program */
+               case O(MONITOR,'p'): /* alert program */
                        if (program)
                                fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
                                        optarg);
@@ -356,7 +400,7 @@ int main(int argc, char *argv[])
                                program = optarg;
                        continue;
 
-               case O('F','d'): /* delay in seconds */
+               case O(MONITOR,'d'): /* delay in seconds */
                        if (delay)
                                fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
                                        optarg);
@@ -374,29 +418,29 @@ int main(int argc, char *argv[])
                        /* now the general management options.  Some are applicable
                         * to other modes. None have arguments.
                         */
-               case O('@','a'):
-               case O('C','a'):
-               case O('B','a'):
-               case O('A','a'): /* add a drive */
+               case O(MANAGE,'a'):
+               case O(CREATE,'a'):
+               case O(BUILD,'a'):
+               case O(ASSEMBLE,'a'): /* add a drive */
                        devmode = 'a';
                        continue;
-               case O('@','r'): /* remove a drive */
+               case O(MANAGE,'r'): /* remove a drive */
                        devmode = 'r';
                        continue;
-               case O('@','f'): /* set faulty */
+               case O(MANAGE,'f'): /* set faulty */
                        devmode = 'f';
                        continue;
-               case O('@','R'):
-               case O('A','R'):
-               case O('B','R'):
-               case O('C','R'): /* Run the array */
+               case O(MANAGE,'R'):
+               case O(ASSEMBLE,'R'):
+               case O(BUILD,'R'):
+               case O(CREATE,'R'): /* Run the array */
                        if (runstop < 0) {
                                fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
                                exit(2);
                        }
                        runstop = 1;
                        continue;
-               case O('@','S'):
+               case O(MANAGE,'S'):
                        if (runstop > 0) {
                                fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
                                exit(2);
@@ -404,26 +448,44 @@ int main(int argc, char *argv[])
                        runstop = -1;
                        continue;
 
-               case O('@','o'):
+               case O(MANAGE,'o'):
                        if (readonly < 0) {
                                fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
                                exit(2);
                        }
                        readonly = 1;
                        continue;
-               case O('@','w'):
+               case O(MANAGE,'w'):
                        if (readonly > 0) {
-                               fprintf(stderr, "mkdctl: Cannot have both readwrite and readonly.\n");
+                               fprintf(stderr, Name ": Cannot have both readwrite and readonly.\n");
                                exit(2);
                        }
                        readonly = -1;
                        continue;
+
+               case O(MISC,'Q'):
+               case O(MISC,'D'):
+               case O(MISC,'E'):
+               case O(MISC,'K'):
+               case O(MISC,'R'):
+               case O(MISC,'S'):
+               case O(MISC,'o'):
+               case O(MISC,'w'):
+                       if (devmode && devmode != opt &&
+                           (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
+                               fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
+                                       devmode =='E'?opt:devmode);
+                               exit(2);
+                       }
+                       devmode = opt;
+                       continue;
+
                }
                /* We have now processed all the valid options. Anything else is
                 * an error
                 */
-               fprintf(stderr, Name ": option %c not valid in mode %c\n",
-                       opt, mode);
+               fprintf(stderr, Name ": option %c not valid in %s mode\n",
+                       opt, map_num(modes, mode));
                exit(2);
 
        }
@@ -436,13 +498,13 @@ int main(int argc, char *argv[])
         * hopefully it's mostly right but there might be some stuff
         * missing
         *
-        * That is mosty checked in ther per-mode stuff but...
+        * That is mosty checked in the per-mode stuff but...
         *
         * For @,B,C  and A without -s, the first device listed must be an md device
         * we check that here and open it.
         */
 
-       if (mode=='@' || mode == 'B' || mode == 'C' || (mode == 'A' && ! scan)) {
+       if (mode==MANAGE || mode == BUILD || mode == CREATE || (mode == ASSEMBLE && ! scan)) {
                if (devs_found < 1) {
                        fprintf(stderr, Name ": an md device must be given in this mode\n");
                        exit(2);
@@ -452,10 +514,9 @@ int main(int argc, char *argv[])
                        exit(1);
        }
 
-
        rv = 0;
        switch(mode) {
-       case '@':/* Management */
+       case MANAGE:
                /* readonly, add/remove, readwrite, runstop */
                if (readonly>0)
                        rv = Manage_ro(devlist->devname, mdfd, readonly);
@@ -467,7 +528,7 @@ int main(int argc, char *argv[])
                if (!rv && runstop)
                        rv = Manage_runstop(devlist->devname, mdfd, runstop);
                break;
-       case 'A': /* Assemble */
+       case ASSEMBLE:
                if (!scan)
                        rv = Assemble(devlist->devname, mdfd, &ident, configfile,
                                      devlist->next,
@@ -513,32 +574,89 @@ int main(int argc, char *argv[])
                                }
                }
                break;
-       case 'B': /* Build */
+       case BUILD:
                rv = Build(devlist->devname, mdfd, chunk, level, raiddisks, devlist->next);
                break;
-       case 'C': /* Create */
+       case CREATE:
                rv = Create(devlist->devname, mdfd, chunk, level, layout, size,
                            raiddisks, sparedisks,
                            devs_found-1, devlist->next, runstop, verbose, force);
                break;
-       case 'D': /* Detail */
-               for (dv=devlist ; dv; dv=dv->next)
-                       rv |= Detail(dv->devname, brief);
-               break;
-       case 'E': /* Examine */
-               if (devlist == NULL && scan==0) {
-                       fprintf(stderr, Name ": No devices to examine\n");
-                       exit(2);
+       case MISC:
+
+               if (devmode == 'E') {
+                       if (devlist == NULL && !scan) {
+                               fprintf(stderr, Name ": No devices to examine\n");
+                               exit(2);
+                       }
+                       if (devlist == NULL)
+                               devlist = conf_get_devs(configfile);
+                       if (devlist == NULL) {
+                               fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
+                               exit(1);
+                       }
+                       rv = Examine(devlist, scan?!verbose:brief, scan);
+               } else {
+                       if (devlist == NULL) {
+                               if ((devmode == 'S' ||devmode=='D') && scan) {
+                                       /* apply to all devices in /proc/mdstat */
+                                       struct mdstat_ent *ms = mdstat_read();
+                                       struct mdstat_ent *e;
+                                       for (e=ms ; e ; e=e->next) {
+                                               char *name = get_md_name(e->devnum);
+
+                                               if (!name) {
+                                                       fprintf(stderr, Name ": cannot find device file for %s\n",
+                                                               e->dev);
+                                                       continue;
+                                               }
+                                               if (devmode == 'D')
+                                                       rv |= Detail(name, !verbose);
+                                               else if (devmode=='S') {
+                                                       mdfd = open_mddev(name);
+                                                       if (mdfd >= 0)
+                                                               rv |= Manage_runstop(name, mdfd, -1);
+                                               }
+                                               put_md_name(name);
+                                       }
+                               } else {                                                
+                                       fprintf(stderr, Name ": No devices given.\n");
+                                       exit(2);
+                               }
+                       }
+                       for (dv=devlist ; dv; dv=dv->next) {
+                               switch(dv->disposition) {
+                               case 'D':
+                                       rv |= Detail(dv->devname, brief); continue;
+                               case 'K': /* Zero superblock */
+                                       rv |= Kill(dv->devname, force); continue;
+                               case 'Q':
+                                       rv |= Query(dv->devname); continue;
+                               }
+                               mdfd = open_mddev(dv->devname);
+                               if (mdfd>=0)
+                                       switch(dv->disposition) {
+                                       case 'R':
+                                               rv |= Manage_runstop(dv->devname, mdfd, 1); break;
+                                       case 'S':
+                                               rv |= Manage_runstop(dv->devname, mdfd, -1); break;
+                                       case 'o':
+                                               rv |= Manage_ro(dv->devname, mdfd, 1); break;
+                                       case 'w':
+                                               rv |= Manage_ro(dv->devname, mdfd, -1); break;
+                                       }
+                       }
                }
-               rv = Examine(devlist, devlist?brief:!verbose, configfile);
-               break;
-       case 'F': /* Follow */
-               rv= Monitor(devlist, mailaddr, program,
-                           delay?delay:60, configfile);
                break;
-       case 'H': /* Zero superblock */
-               for (dv=devlist ; dv; dv=dv->next)
-                       rv |= Kill(dv->devname, force);
+       case MONITOR:
+/*
+               if (!devlist && !scan) {
+                       fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
+                       rv = 1;
+                       break;
+               }
+*/             rv= Monitor(devlist, mailaddr, program,
+                           delay?delay:60, scan, configfile);
                break;
        }
        exit(rv);