*
* CDDL HEADER END
*/
+
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
*/
/*
#include <sys/mnttab.h>
#include <sys/mntent.h>
#include <sys/types.h>
+#include <wait.h>
#include <libzfs.h>
#include "libzfs_impl.h"
#include "zfs_prop.h"
+#include "zfeature_common.h"
int
libzfs_errno(libzfs_handle_t *hdl)
case EZFS_RESILVERING:
return (dgettext(TEXT_DOMAIN, "currently resilvering"));
case EZFS_BADVERSION:
- return (dgettext(TEXT_DOMAIN, "unsupported version"));
+ return (dgettext(TEXT_DOMAIN, "unsupported version or "
+ "feature"));
case EZFS_POOLUNAVAIL:
return (dgettext(TEXT_DOMAIN, "pool is unavailable"));
case EZFS_DEVOVERFLOW:
switch (error) {
case ENXIO:
case ENODEV:
+ case EPIPE:
zfs_verror(hdl, EZFS_IO, fmt, ap);
break;
hdl->libzfs_printerr = printerr;
}
+static int
+libzfs_module_loaded(const char *module)
+{
+ const char path_prefix[] = "/sys/module/";
+ char path[256];
+
+ memcpy(path, path_prefix, sizeof(path_prefix) - 1);
+ strcpy(path + sizeof(path_prefix) - 1, module);
+
+ return (access(path, F_OK) == 0);
+}
+
+int
+libzfs_run_process(const char *path, char *argv[], int flags)
+{
+ pid_t pid;
+ int rc, devnull_fd;
+
+ pid = vfork();
+ if (pid == 0) {
+ devnull_fd = open("/dev/null", O_WRONLY);
+
+ if (devnull_fd < 0)
+ _exit(-1);
+
+ if (!(flags & STDOUT_VERBOSE))
+ (void) dup2(devnull_fd, STDOUT_FILENO);
+
+ if (!(flags & STDERR_VERBOSE))
+ (void) dup2(devnull_fd, STDERR_FILENO);
+
+ close(devnull_fd);
+
+ (void) execvp(path, argv);
+ _exit(-1);
+ } else if (pid > 0) {
+ int status;
+
+ while ((rc = waitpid(pid, &status, 0)) == -1 &&
+ errno == EINTR);
+ if (rc < 0 || !WIFEXITED(status))
+ return -1;
+
+ return WEXITSTATUS(status);
+ }
+
+ return -1;
+}
+
+int
+libzfs_load_module(const char *module)
+{
+ char *argv[4] = {"/sbin/modprobe", "-q", (char *)module, (char *)0};
+
+ if (libzfs_module_loaded(module))
+ return 0;
+
+ return libzfs_run_process("/sbin/modprobe", argv, 0);
+}
+
libzfs_handle_t *
libzfs_init(void)
{
libzfs_handle_t *hdl;
+ if (libzfs_load_module("zfs") != 0) {
+ (void) fprintf(stderr, gettext("Failed to load ZFS module "
+ "stack.\nLoad the module manually by running "
+ "'insmod <location>/zfs.ko' as root.\n"));
+ return (NULL);
+ }
+
if ((hdl = calloc(1, sizeof (libzfs_handle_t))) == NULL) {
return (NULL);
}
if ((hdl->libzfs_fd = open(ZFS_DEV, O_RDWR)) < 0) {
+ (void) fprintf(stderr, gettext("Unable to open %s: %s.\n"),
+ ZFS_DEV, strerror(errno));
+ if (errno == ENOENT)
+ (void) fprintf(stderr,
+ gettext("Verify the ZFS module stack is "
+ "loaded by running '/sbin/modprobe zfs'.\n"));
+
free(hdl);
return (NULL);
}
if ((hdl->libzfs_mnttab = fopen(MNTTAB, "r")) == NULL) {
#endif
(void) close(hdl->libzfs_fd);
+ (void) fprintf(stderr,
+ gettext("mtab is not present at %s.\n"), MNTTAB);
free(hdl);
return (NULL);
}
zfs_prop_init();
zpool_prop_init();
+ zpool_feature_init();
libzfs_mnttab_init(hdl);
return (hdl);
#endif
if (hdl->libzfs_sharetab)
(void) fclose(hdl->libzfs_sharetab);
-#ifdef HAVE_ZPL
zfs_uninit_libshare(hdl);
-#endif
if (hdl->libzfs_log_str)
(void) free(hdl->libzfs_log_str);
zpool_free_handles(hdl);
}
/*
+ * Append partition suffix to an otherwise fully qualified device path.
+ * This is used to generate the name the full path as its stored in
+ * ZPOOL_CONFIG_PATH for whole disk devices. On success the new length
+ * of 'path' will be returned on error a negative value is returned.
+ */
+int
+zfs_append_partition(char *path, size_t max_len)
+{
+ int len = strlen(path);
+
+ if (strncmp(path, UDISK_ROOT, strlen(UDISK_ROOT)) == 0) {
+ if (len + 6 >= max_len)
+ return (-1);
+
+ (void) strcat(path, "-part1");
+ len += 6;
+ } else {
+ if (len + 2 >= max_len)
+ return (-1);
+
+ if (isdigit(path[len-1])) {
+ (void) strcat(path, "p1");
+ len += 2;
+ } else {
+ (void) strcat(path, "1");
+ len += 1;
+ }
+ }
+
+ return (len);
+}
+
+/*
+ * Given a shorthand device name check if a file by that name exists in any
+ * of the 'zpool_default_import_path' or ZPOOL_IMPORT_PATH directories. If
+ * one is found, store its fully qualified path in the 'path' buffer passed
+ * by the caller and return 0, otherwise return an error.
+ */
+int
+zfs_resolve_shortname(const char *name, char *path, size_t len)
+{
+ int i, error = -1;
+ char *dir, *env, *envdup;
+
+ env = getenv("ZPOOL_IMPORT_PATH");
+ errno = ENOENT;
+
+ if (env) {
+ envdup = strdup(env);
+ dir = strtok(envdup, ":");
+ while (dir && error) {
+ (void) snprintf(path, len, "%s/%s", dir, name);
+ error = access(path, F_OK);
+ dir = strtok(NULL, ":");
+ }
+ free(envdup);
+ } else {
+ for (i = 0; i < DEFAULT_IMPORT_PATH_SIZE && error < 0; i++) {
+ (void) snprintf(path, len, "%s/%s",
+ zpool_default_import_path[i], name);
+ error = access(path, F_OK);
+ }
+ }
+
+ return (error ? ENOENT : 0);
+}
+
+/*
+ * Given a shorthand device name look for a match against 'cmp_name'. This
+ * is done by checking all prefix expansions using either the default
+ * 'zpool_default_import_paths' or the ZPOOL_IMPORT_PATH environment
+ * variable. Proper partition suffixes will be appended if this is a
+ * whole disk. When a match is found 0 is returned otherwise ENOENT.
+ */
+static int
+zfs_strcmp_shortname(char *name, char *cmp_name, int wholedisk)
+{
+ int path_len, cmp_len, i = 0, error = ENOENT;
+ char *dir, *env, *envdup = NULL;
+ char path_name[MAXPATHLEN];
+
+ cmp_len = strlen(cmp_name);
+ env = getenv("ZPOOL_IMPORT_PATH");
+
+ if (env) {
+ envdup = strdup(env);
+ dir = strtok(envdup, ":");
+ } else {
+ dir = zpool_default_import_path[i];
+ }
+
+ while (dir) {
+ /* Trim trailing directory slashes from ZPOOL_IMPORT_PATH */
+ while (dir[strlen(dir)-1] == '/')
+ dir[strlen(dir)-1] = '\0';
+
+ path_len = snprintf(path_name, MAXPATHLEN, "%s/%s", dir, name);
+ if (wholedisk)
+ path_len = zfs_append_partition(path_name, MAXPATHLEN);
+
+ if ((path_len == cmp_len) && !strcmp(path_name, cmp_name)) {
+ error = 0;
+ break;
+ }
+
+ if (env) {
+ dir = strtok(NULL, ":");
+ } else if (++i < DEFAULT_IMPORT_PATH_SIZE) {
+ dir = zpool_default_import_path[i];
+ } else {
+ dir = NULL;
+ }
+ }
+
+ if (env)
+ free(envdup);
+
+ return (error);
+}
+
+/*
+ * Given either a shorthand or fully qualified path name look for a match
+ * against 'cmp'. The passed name will be expanded as needed for comparison
+ * purposes and redundant slashes stripped to ensure an accurate match.
+ */
+int
+zfs_strcmp_pathname(char *name, char *cmp, int wholedisk)
+{
+ int path_len, cmp_len;
+ char path_name[MAXPATHLEN];
+ char cmp_name[MAXPATHLEN];
+ char *dir;
+
+ /* Strip redundant slashes if one exists due to ZPOOL_IMPORT_PATH */
+ memset(cmp_name, 0, MAXPATHLEN);
+ dir = strtok(cmp, "/");
+ while (dir) {
+ strcat(cmp_name, "/");
+ strcat(cmp_name, dir);
+ dir = strtok(NULL, "/");
+ }
+
+ if (name[0] != '/')
+ return zfs_strcmp_shortname(name, cmp_name, wholedisk);
+
+ strncpy(path_name, name, MAXPATHLEN);
+ path_len = strlen(path_name);
+ cmp_len = strlen(cmp_name);
+
+ if (wholedisk) {
+ path_len = zfs_append_partition(path_name, MAXPATHLEN);
+ if (path_len == -1)
+ return (ENOMEM);
+ }
+
+ if ((path_len != cmp_len) || strcmp(path_name, cmp_name))
+ return (ENOENT);
+
+ return (0);
+}
+
+/*
* Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from
* an ioctl().
*/
break;
}
if (i == strlen(ends)) {
- zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
- "invalid numeric suffix '%s'"), buf);
+ if (hdl)
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+ "invalid numeric suffix '%s'"), buf);
return (-1);
}
/*
- * We want to allow trailing 'b' characters for 'GB' or 'Mb'. But don't
- * allow 'BB' - that's just weird.
+ * Allow 'G' = 'GB' = 'GiB', case-insensitively.
+ * However, 'BB' and 'BiB' are disallowed.
*/
- if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0' &&
- toupper(buf[0]) != 'B'))
+ if (buf[1] == '\0' ||
+ (toupper(buf[0]) != 'B' &&
+ ((toupper(buf[1]) == 'B' && buf[2] == '\0') ||
+ (toupper(buf[1]) == 'I' && toupper(buf[2]) == 'B' &&
+ buf[3] == '\0'))))
return (10*i);
- zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
- "invalid numeric suffix '%s'"), buf);
+ if (hdl)
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+ "invalid numeric suffix '%s'"), buf);
return (-1);
}
* this is a pool property or if this isn't a user-defined
* dataset property,
*/
- if (prop == ZPROP_INVAL && (type == ZFS_TYPE_POOL ||
- (!zfs_prop_user(propname) && !zfs_prop_userquota(propname)))) {
+ if (prop == ZPROP_INVAL && ((type == ZFS_TYPE_POOL &&
+ !zpool_prop_feature(propname) &&
+ !zpool_prop_unsupported(propname)) ||
+ (type == ZFS_TYPE_DATASET && !zfs_prop_user(propname) &&
+ !zfs_prop_userquota(propname) && !zfs_prop_written(propname)))) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"invalid property '%s'"), propname);
return (zfs_error(hdl, EZFS_BADPROP,
entry->pl_prop = prop;
if (prop == ZPROP_INVAL) {
- if ((entry->pl_user_prop = zfs_strdup(hdl, propname)) == NULL) {
+ if ((entry->pl_user_prop = zfs_strdup(hdl, propname)) ==
+ NULL) {
free(entry);
return (-1);
}
git://git.camperquake.de / zfs.git / blobdiff