X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=daemon%2Flvm.c;h=b100cd391a443df254384ef9d9a9da44eb39e156;hb=1ea1e536346f59fa63fdd33639ffc297282bfc37;hp=7f31c84ed53965d49282f4818393ea07c2a56277;hpb=447b96e57cdf40ddc3b7669ba65dbea961748f71;p=libguestfs.git diff --git a/daemon/lvm.c b/daemon/lvm.c index 7f31c84..b100cd3 100644 --- a/daemon/lvm.c +++ b/daemon/lvm.c @@ -1,5 +1,5 @@ /* libguestfs - the guestfsd daemon - * Copyright (C) 2009 Red Hat Inc. + * Copyright (C) 2009 Red Hat Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -22,17 +22,25 @@ #include #include #include -#include #include "daemon.h" +#include "c-ctype.h" #include "actions.h" +#include "optgroups.h" + +int +optgroup_lvm2_available (void) +{ + int r = access ("/sbin/lvm", X_OK); + return r == 0; +} /* LVM actions. Keep an eye on liblvm, although at the time * of writing it hasn't progressed very far. */ static char ** -convert_lvm_output (char *out, char *prefix) +convert_lvm_output (char *out, const char *prefix) { char *p, *pend; char **r = NULL; @@ -49,12 +57,12 @@ convert_lvm_output (char *out, char *prefix) pend++; } - while (*p && isspace (*p)) /* Skip any leading whitespace. */ + while (*p && c_isspace (*p)) /* Skip any leading whitespace. */ p++; /* Sigh, skip trailing whitespace too. "pvs", I'm looking at you. */ len = strlen (p)-1; - while (*p && isspace (p[len])) + while (*p && c_isspace (p[len])) p[len--] = '\0'; if (!*p) { /* Empty line? Skip it. */ @@ -93,7 +101,7 @@ do_pvs (void) int r; r = command (&out, &err, - "/sbin/lvm", "pvs", "-o", "pv_name", "--noheadings", NULL); + "/sbin/lvm", "pvs", "-o", "pv_name", "--noheadings", NULL); if (r == -1) { reply_with_error ("%s", err); free (out); @@ -113,7 +121,7 @@ do_vgs (void) int r; r = command (&out, &err, - "/sbin/lvm", "vgs", "-o", "vg_name", "--noheadings", NULL); + "/sbin/lvm", "vgs", "-o", "vg_name", "--noheadings", NULL); if (r == -1) { reply_with_error ("%s", err); free (out); @@ -133,9 +141,9 @@ do_lvs (void) int r; r = command (&out, &err, - "/sbin/lvm", "lvs", - "-o", "vg_name,lv_name", "--noheadings", - "--separator", "/", NULL); + "/sbin/lvm", "lvs", + "-o", "vg_name,lv_name", "--noheadings", + "--separator", "/", NULL); if (r == -1) { reply_with_error ("%s", err); free (out); @@ -152,20 +160,355 @@ do_lvs (void) * the code. That code is in stubs.c, and it is generated as usual * by generator.ml. */ -guestfs_lvm_int_pv_list * +guestfs_int_lvm_pv_list * do_pvs_full (void) { return parse_command_line_pvs (); } -guestfs_lvm_int_vg_list * +guestfs_int_lvm_vg_list * do_vgs_full (void) { return parse_command_line_vgs (); } -guestfs_lvm_int_lv_list * +guestfs_int_lvm_lv_list * do_lvs_full (void) { return parse_command_line_lvs (); } + +int +do_pvcreate (const char *device) +{ + char *err; + int r; + + r = command (NULL, &err, + "/sbin/lvm", "pvcreate", device, NULL); + if (r == -1) { + reply_with_error ("%s", err); + free (err); + return -1; + } + + free (err); + + udev_settle (); + + return 0; +} + +int +do_vgcreate (const char *volgroup, char *const *physvols) +{ + char *err; + int r, argc, i; + const char **argv; + + argc = count_strings (physvols) + 3; + argv = malloc (sizeof (char *) * (argc + 1)); + if (argv == NULL) { + reply_with_perror ("malloc"); + return -1; + } + argv[0] = "/sbin/lvm"; + argv[1] = "vgcreate"; + argv[2] = volgroup; + for (i = 3; i <= argc; ++i) + argv[i] = physvols[i-3]; + + r = commandv (NULL, &err, (const char * const*) argv); + if (r == -1) { + reply_with_error ("%s", err); + free (err); + return -1; + } + + free (err); + + udev_settle (); + + return 0; +} + +int +do_lvcreate (const char *logvol, const char *volgroup, int mbytes) +{ + char *err; + int r; + char size[64]; + + snprintf (size, sizeof size, "%d", mbytes); + + r = command (NULL, &err, + "/sbin/lvm", "lvcreate", + "-L", size, "-n", logvol, volgroup, NULL); + if (r == -1) { + reply_with_error ("%s", err); + free (err); + return -1; + } + + free (err); + + udev_settle (); + + return 0; +} + +int +do_lvresize (const char *logvol, int mbytes) +{ + char *err; + int r; + char size[64]; + + snprintf (size, sizeof size, "%d", mbytes); + + r = command (NULL, &err, + "/sbin/lvm", "lvresize", + "-L", size, logvol, NULL); + if (r == -1) { + reply_with_error ("%s", err); + free (err); + return -1; + } + + free (err); + return 0; +} + +/* Super-dangerous command used for testing. It removes all + * LVs, VGs and PVs permanently. + */ +int +do_lvm_remove_all (void) +{ + char **xs; + int i, r; + char *err; + + /* Remove LVs. */ + xs = do_lvs (); + if (xs == NULL) + return -1; + + for (i = 0; xs[i] != NULL; ++i) { + r = command (NULL, &err, "/sbin/lvm", "lvremove", "-f", xs[i], NULL); + if (r == -1) { + reply_with_error ("lvremove: %s: %s", xs[i], err); + free (err); + free_strings (xs); + return -1; + } + free (err); + } + free_strings (xs); + + /* Remove VGs. */ + xs = do_vgs (); + if (xs == NULL) + return -1; + + for (i = 0; xs[i] != NULL; ++i) { + r = command (NULL, &err, "/sbin/lvm", "vgremove", "-f", xs[i], NULL); + if (r == -1) { + reply_with_error ("vgremove: %s: %s", xs[i], err); + free (err); + free_strings (xs); + return -1; + } + free (err); + } + free_strings (xs); + + /* Remove PVs. */ + xs = do_pvs (); + if (xs == NULL) + return -1; + + for (i = 0; xs[i] != NULL; ++i) { + r = command (NULL, &err, "/sbin/lvm", "pvremove", "-f", xs[i], NULL); + if (r == -1) { + reply_with_error ("pvremove: %s: %s", xs[i], err); + free (err); + free_strings (xs); + return -1; + } + free (err); + } + free_strings (xs); + + udev_settle (); + + /* There, that was easy, sorry about your data. */ + return 0; +} + +int +do_lvremove (const char *device) +{ + char *err; + int r; + + r = command (NULL, &err, + "/sbin/lvm", "lvremove", "-f", device, NULL); + if (r == -1) { + reply_with_error ("%s", err); + free (err); + return -1; + } + + free (err); + + udev_settle (); + + return 0; +} + +int +do_vgremove (const char *device) +{ + char *err; + int r; + + r = command (NULL, &err, + "/sbin/lvm", "vgremove", "-f", device, NULL); + if (r == -1) { + reply_with_error ("%s", err); + free (err); + return -1; + } + + free (err); + + udev_settle (); + + return 0; +} + +int +do_pvremove (const char *device) +{ + char *err; + int r; + + r = command (NULL, &err, + "/sbin/lvm", "pvremove", "-ff", device, NULL); + if (r == -1) { + reply_with_error ("%s", err); + free (err); + return -1; + } + + free (err); + + udev_settle (); + + return 0; +} + +int +do_pvresize (const char *device) +{ + char *err; + int r; + + r = command (NULL, &err, + "/sbin/lvm", "pvresize", device, NULL); + if (r == -1) { + reply_with_error ("%s: %s", device, err); + free (err); + return -1; + } + + free (err); + return 0; +} + +int +do_vg_activate (int activate, char *const *volgroups) +{ + char *err; + int r, i, argc; + const char **argv; + + argc = count_strings (volgroups) + 4; + argv = malloc (sizeof (char *) * (argc+1)); + if (argv == NULL) { + reply_with_perror ("malloc"); + return -1; + } + + argv[0] = "/sbin/lvm"; + argv[1] = "vgchange"; + argv[2] = "-a"; + argv[3] = activate ? "y" : "n"; + for (i = 4; i <= argc; ++i) + argv[i] = volgroups[i-4]; + + r = commandv (NULL, &err, (const char * const*) argv); + if (r == -1) { + reply_with_error ("vgchange: %s", err); + free (err); + return -1; + } + + free (err); + + udev_settle (); + + return 0; +} + +int +do_vg_activate_all (int activate) +{ + char *empty[] = { NULL }; + return do_vg_activate (activate, empty); +} + +int +do_lvrename (const char *logvol, const char *newlogvol) +{ + char *err; + int r; + + r = command (NULL, &err, + "/sbin/lvm", "lvrename", + logvol, newlogvol, NULL); + if (r == -1) { + reply_with_error ("%s -> %s: %s", logvol, newlogvol, err); + free (err); + return -1; + } + + free (err); + + udev_settle (); + + return 0; +} + +int +do_vgrename (const char *volgroup, const char *newvolgroup) +{ + char *err; + int r; + + r = command (NULL, &err, + "/sbin/lvm", "vgrename", + volgroup, newvolgroup, NULL); + if (r == -1) { + reply_with_error ("%s -> %s: %s", volgroup, newvolgroup, err); + free (err); + return -1; + } + + free (err); + + udev_settle (); + + return 0; +}