*
* CDDL HEADER END
*/
+
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, Joyent, Inc. All rights reserved.
+ * Copyright (c) 2011, 2017 by Delphix. All rights reserved.
+ * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>
+ * Copyright (c) 2017 Datto Inc.
*/
/*
#include <sys/mnttab.h>
#include <sys/mntent.h>
#include <sys/types.h>
-#include <wait.h>
+#include <sys/wait.h>
#include <libzfs.h>
+#include <libzfs_core.h>
#include "libzfs_impl.h"
#include "zfs_prop.h"
+#include "zfeature_common.h"
+#include <zfs_fletcher.h>
int
libzfs_errno(libzfs_handle_t *hdl)
return (hdl->libzfs_error);
}
+const char *
+libzfs_error_init(int error)
+{
+ switch (error) {
+ case ENXIO:
+ return (dgettext(TEXT_DOMAIN, "The ZFS modules are not "
+ "loaded.\nTry running '/sbin/modprobe zfs' as root "
+ "to load them.\n"));
+ case ENOENT:
+ return (dgettext(TEXT_DOMAIN, "/dev/zfs and /proc/self/mounts "
+ "are required.\nTry running 'udevadm trigger' and 'mount "
+ "-t proc proc /proc' as root.\n"));
+ case ENOEXEC:
+ return (dgettext(TEXT_DOMAIN, "The ZFS modules cannot be "
+ "auto-loaded.\nTry running '/sbin/modprobe zfs' as "
+ "root to manually load them.\n"));
+ case EACCES:
+ return (dgettext(TEXT_DOMAIN, "Permission denied the "
+ "ZFS utilities must be run as root.\n"));
+ default:
+ return (dgettext(TEXT_DOMAIN, "Failed to initialize the "
+ "libzfs library.\n"));
+ }
+}
+
const char *
libzfs_error_action(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:
case EZFS_POSTSPLIT_ONLINE:
return (dgettext(TEXT_DOMAIN, "disk was split from this pool "
"into a new one"));
+ case EZFS_SCRUB_PAUSED:
+ return (dgettext(TEXT_DOMAIN, "scrub is paused; "
+ "use 'zpool scrub' to resume"));
case EZFS_SCRUBBING:
return (dgettext(TEXT_DOMAIN, "currently scrubbing; "
"use 'zpool scrub -s' to cancel current scrub"));
return (dgettext(TEXT_DOMAIN, "invalid diff data"));
case EZFS_POOLREADONLY:
return (dgettext(TEXT_DOMAIN, "pool is read-only"));
+ case EZFS_NO_PENDING:
+ return (dgettext(TEXT_DOMAIN, "operation is not "
+ "in progress"));
+ case EZFS_CHECKPOINT_EXISTS:
+ return (dgettext(TEXT_DOMAIN, "checkpoint exists"));
+ case EZFS_DISCARDING_CHECKPOINT:
+ return (dgettext(TEXT_DOMAIN, "currently discarding "
+ "checkpoint"));
+ case EZFS_NO_CHECKPOINT:
+ return (dgettext(TEXT_DOMAIN, "checkpoint does not exist"));
+ case EZFS_DEVRM_IN_PROGRESS:
+ return (dgettext(TEXT_DOMAIN, "device removal in progress"));
+ case EZFS_VDEV_TOO_BIG:
+ return (dgettext(TEXT_DOMAIN, "device exceeds supported size"));
+ case EZFS_ACTIVE_POOL:
+ return (dgettext(TEXT_DOMAIN, "pool is imported on a "
+ "different host"));
+ case EZFS_CRYPTOFAILED:
+ return (dgettext(TEXT_DOMAIN, "encryption failure"));
case EZFS_UNKNOWN:
return (dgettext(TEXT_DOMAIN, "unknown error"));
default:
switch (error) {
case ENXIO:
case ENODEV:
+ case EPIPE:
zfs_verror(hdl, EZFS_IO, fmt, ap);
break;
case ENOSPC:
case EDQUOT:
zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
- return (-1);
+ break;
case EEXIST:
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"pool I/O is currently suspended"));
zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
break;
+ case EREMOTEIO:
+ zfs_verror(hdl, EZFS_ACTIVE_POOL, fmt, ap);
+ break;
default:
zfs_error_aux(hdl, strerror(error));
zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
zfs_verror(hdl, EZFS_BUSY, fmt, ap);
break;
+ /* There is no pending operation to cancel */
+ case ENOTACTIVE:
+ zfs_verror(hdl, EZFS_NO_PENDING, fmt, ap);
+ break;
+
case ENXIO:
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"one or more devices is currently unavailable"));
case EROFS:
zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
break;
-
+ case EDOM:
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+ "block size out of range or does not match"));
+ zfs_verror(hdl, EZFS_BADPROP, fmt, ap);
+ break;
+ case EREMOTEIO:
+ zfs_verror(hdl, EZFS_ACTIVE_POOL, fmt, ap);
+ break;
+ case ZFS_ERR_CHECKPOINT_EXISTS:
+ zfs_verror(hdl, EZFS_CHECKPOINT_EXISTS, fmt, ap);
+ break;
+ case ZFS_ERR_DISCARDING_CHECKPOINT:
+ zfs_verror(hdl, EZFS_DISCARDING_CHECKPOINT, fmt, ap);
+ break;
+ case ZFS_ERR_NO_CHECKPOINT:
+ zfs_verror(hdl, EZFS_NO_CHECKPOINT, fmt, ap);
+ break;
+ case ZFS_ERR_DEVRM_IN_PROGRESS:
+ zfs_verror(hdl, EZFS_DEVRM_IN_PROGRESS, fmt, ap);
+ break;
+ case ZFS_ERR_VDEV_TOO_BIG:
+ zfs_verror(hdl, EZFS_VDEV_TOO_BIG, fmt, ap);
+ break;
default:
zfs_error_aux(hdl, strerror(error));
zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
* Convert a number to an appropriately human-readable output.
*/
void
-zfs_nicenum(uint64_t num, char *buf, size_t buflen)
+zfs_nicenum_format(uint64_t num, char *buf, size_t buflen,
+ enum zfs_nicenum_format format)
{
uint64_t n = num;
int index = 0;
- char u;
+ const char *u;
+ const char *units[3][7] = {
+ [ZFS_NICENUM_1024] = {"", "K", "M", "G", "T", "P", "E"},
+ [ZFS_NICENUM_BYTES] = {"B", "K", "M", "G", "T", "P", "E"},
+ [ZFS_NICENUM_TIME] = {"ns", "us", "ms", "s", "?", "?", "?"}
+ };
+
+ const int units_len[] = {[ZFS_NICENUM_1024] = 6,
+ [ZFS_NICENUM_BYTES] = 6,
+ [ZFS_NICENUM_TIME] = 4};
+
+ const int k_unit[] = { [ZFS_NICENUM_1024] = 1024,
+ [ZFS_NICENUM_BYTES] = 1024,
+ [ZFS_NICENUM_TIME] = 1000};
+
+ double val;
+
+ if (format == ZFS_NICENUM_RAW) {
+ snprintf(buf, buflen, "%llu", (u_longlong_t)num);
+ return;
+ } else if (format == ZFS_NICENUM_RAWTIME && num > 0) {
+ snprintf(buf, buflen, "%llu", (u_longlong_t)num);
+ return;
+ } else if (format == ZFS_NICENUM_RAWTIME && num == 0) {
+ snprintf(buf, buflen, "%s", "-");
+ return;
+ }
- while (n >= 1024) {
- n /= 1024;
+ while (n >= k_unit[format] && index < units_len[format]) {
+ n /= k_unit[format];
index++;
}
- u = " KMGTPE"[index];
+ u = units[format][index];
- if (index == 0) {
- (void) snprintf(buf, buflen, "%llu", (u_longlong_t) n);
- } else if ((num & ((1ULL << 10 * index) - 1)) == 0) {
+ /* Don't print zero latencies since they're invalid */
+ if ((format == ZFS_NICENUM_TIME) && (num == 0)) {
+ (void) snprintf(buf, buflen, "-");
+ } else if ((index == 0) || ((num %
+ (uint64_t)powl(k_unit[format], index)) == 0)) {
/*
* If this is an even multiple of the base, always display
* without any decimal precision.
*/
- (void) snprintf(buf, buflen, "%llu%c", (u_longlong_t) n, u);
+ (void) snprintf(buf, buflen, "%llu%s", (u_longlong_t)n, u);
+
} else {
/*
* We want to choose a precision that reflects the best choice
*/
int i;
for (i = 2; i >= 0; i--) {
- if (snprintf(buf, buflen, "%.*f%c", i,
- (double)num / (1ULL << 10 * index), u) <= 5)
- break;
+ val = (double)num /
+ (uint64_t)powl(k_unit[format], index);
+
+ /*
+ * Don't print floating point values for time. Note,
+ * we use floor() instead of round() here, since
+ * round can result in undesirable results. For
+ * example, if "num" is in the range of
+ * 999500-999999, it will print out "1000us". This
+ * doesn't happen if we use floor().
+ */
+ if (format == ZFS_NICENUM_TIME) {
+ if (snprintf(buf, buflen, "%d%s",
+ (unsigned int) floor(val), u) <= 5)
+ break;
+
+ } else {
+ if (snprintf(buf, buflen, "%.*f%s", i,
+ val, u) <= 5)
+ break;
+ }
}
}
}
+/*
+ * Convert a number to an appropriately human-readable output.
+ */
+void
+zfs_nicenum(uint64_t num, char *buf, size_t buflen)
+{
+ zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_1024);
+}
+
+/*
+ * Convert a time to an appropriately human-readable output.
+ * @num: Time in nanoseconds
+ */
+void
+zfs_nicetime(uint64_t num, char *buf, size_t buflen)
+{
+ zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_TIME);
+}
+
+/*
+ * Print out a raw number with correct column spacing
+ */
+void
+zfs_niceraw(uint64_t num, char *buf, size_t buflen)
+{
+ zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_RAW);
+}
+
+/*
+ * Convert a number of bytes to an appropriately human-readable output.
+ */
+void
+zfs_nicebytes(uint64_t num, char *buf, size_t buflen)
+{
+ zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_BYTES);
+}
+
void
libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr)
{
static int
libzfs_module_loaded(const char *module)
{
- FILE *f;
- int result = 0;
- char name[256];
+ const char path_prefix[] = "/sys/module/";
+ char path[256];
- f = fopen("/proc/modules", "r");
- if (f == NULL)
- return -1;
+ memcpy(path, path_prefix, sizeof (path_prefix) - 1);
+ strcpy(path + sizeof (path_prefix) - 1, module);
- while (fgets(name, sizeof(name), f)) {
- char *c = strchr(name, ' ');
- if (!c)
- continue;
- *c = 0;
- if (strcmp(module, name) == 0) {
- result = 1;
+ return (access(path, F_OK) == 0);
+}
+
+
+/*
+ * Read lines from an open file descriptor and store them in an array of
+ * strings until EOF. lines[] will be allocated and populated with all the
+ * lines read. All newlines are replaced with NULL terminators for
+ * convenience. lines[] must be freed after use with libzfs_free_str_array().
+ *
+ * Returns the number of lines read.
+ */
+static int
+libzfs_read_stdout_from_fd(int fd, char **lines[])
+{
+
+ FILE *fp;
+ int lines_cnt = 0;
+ size_t len = 0;
+ char *line = NULL;
+ char **tmp_lines = NULL, **tmp;
+ char *nl = NULL;
+ int rc;
+
+ fp = fdopen(fd, "r");
+ if (fp == NULL)
+ return (0);
+ while (1) {
+ rc = getline(&line, &len, fp);
+ if (rc == -1)
+ break;
+
+ tmp = realloc(tmp_lines, sizeof (*tmp_lines) * (lines_cnt + 1));
+ if (tmp == NULL) {
+ /* Return the lines we were able to process */
break;
}
+ tmp_lines = tmp;
+
+ /* Terminate newlines */
+ if ((nl = strchr(line, '\n')) != NULL)
+ *nl = '\0';
+ tmp_lines[lines_cnt] = line;
+ lines_cnt++;
+ line = NULL;
}
- fclose(f);
-
- return result;
+ fclose(fp);
+ *lines = tmp_lines;
+ return (lines_cnt);
}
static int
-libzfs_run_process(const char *path, char *argv[])
+libzfs_run_process_impl(const char *path, char *argv[], char *env[], int flags,
+ char **lines[], int *lines_cnt)
{
pid_t pid;
- int rc;
+ int error, devnull_fd;
+ int link[2];
+
+ /*
+ * Setup a pipe between our child and parent process if we're
+ * reading stdout.
+ */
+ if ((lines != NULL) && pipe(link) == -1)
+ return (-ESTRPIPE);
pid = vfork();
if (pid == 0) {
- close(1);
- close(2);
- (void) execvp(path, argv);
+ /* Child process */
+ devnull_fd = open("/dev/null", O_WRONLY);
+
+ if (devnull_fd < 0)
+ _exit(-1);
+
+ if (!(flags & STDOUT_VERBOSE) && (lines == NULL))
+ (void) dup2(devnull_fd, STDOUT_FILENO);
+ else if (lines != NULL) {
+ /* Save the output to lines[] */
+ dup2(link[1], STDOUT_FILENO);
+ close(link[0]);
+ close(link[1]);
+ }
+
+ if (!(flags & STDERR_VERBOSE))
+ (void) dup2(devnull_fd, STDERR_FILENO);
+
+ close(devnull_fd);
+
+ if (flags & NO_DEFAULT_PATH) {
+ if (env == NULL)
+ execv(path, argv);
+ else
+ execve(path, argv, env);
+ } else {
+ if (env == NULL)
+ execvp(path, argv);
+ else
+ execvpe(path, argv, env);
+ }
+
_exit(-1);
} else if (pid > 0) {
+ /* Parent process */
int status;
- while ((rc = waitpid(pid, &status, 0)) == -1 &&
- errno == EINTR);
- if (rc < 0 || !WIFEXITED(status))
- return -1;
+ while ((error = waitpid(pid, &status, 0)) == -1 &&
+ errno == EINTR) { }
+ if (error < 0 || !WIFEXITED(status))
+ return (-1);
- return WEXITSTATUS(status);
+ if (lines != NULL) {
+ close(link[1]);
+ *lines_cnt = libzfs_read_stdout_from_fd(link[0], lines);
+ }
+ return (WEXITSTATUS(status));
}
- return -1;
+ return (-1);
+}
+
+int
+libzfs_run_process(const char *path, char *argv[], int flags)
+{
+ return (libzfs_run_process_impl(path, argv, NULL, flags, NULL, NULL));
+}
+
+/*
+ * Run a command and store its stdout lines in an array of strings (lines[]).
+ * lines[] is allocated and populated for you, and the number of lines is set in
+ * lines_cnt. lines[] must be freed after use with libzfs_free_str_array().
+ * All newlines (\n) in lines[] are terminated for convenience.
+ */
+int
+libzfs_run_process_get_stdout(const char *path, char *argv[], char *env[],
+ char **lines[], int *lines_cnt)
+{
+ return (libzfs_run_process_impl(path, argv, env, 0, lines, lines_cnt));
}
+/*
+ * Same as libzfs_run_process_get_stdout(), but run without $PATH set. This
+ * means that *path needs to be the full path to the executable.
+ */
+int
+libzfs_run_process_get_stdout_nopath(const char *path, char *argv[],
+ char *env[], char **lines[], int *lines_cnt)
+{
+ return (libzfs_run_process_impl(path, argv, env, NO_DEFAULT_PATH,
+ lines, lines_cnt));
+}
+
+/*
+ * Free an array of strings. Free both the strings contained in the array and
+ * the array itself.
+ */
+void
+libzfs_free_str_array(char **strs, int count)
+{
+ while (--count >= 0)
+ free(strs[count]);
+
+ free(strs);
+}
+
+/*
+ * Returns 1 if environment variable is set to "YES", "yes", "ON", "on", or
+ * a non-zero number.
+ *
+ * Returns 0 otherwise.
+ */
+int
+libzfs_envvar_is_set(char *envvar)
+{
+ char *env = getenv(envvar);
+ if (env && (strtoul(env, NULL, 0) > 0 ||
+ (!strncasecmp(env, "YES", 3) && strnlen(env, 4) == 3) ||
+ (!strncasecmp(env, "ON", 2) && strnlen(env, 3) == 2)))
+ return (1);
+
+ return (0);
+}
+
+/*
+ * Verify the required ZFS_DEV device is available and optionally attempt
+ * to load the ZFS modules. Under normal circumstances the modules
+ * should already have been loaded by some external mechanism.
+ *
+ * Environment variables:
+ * - ZFS_MODULE_LOADING="YES|yes|ON|on" - Attempt to load modules.
+ * - ZFS_MODULE_TIMEOUT="<seconds>" - Seconds to wait for ZFS_DEV
+ */
static int
libzfs_load_module(const char *module)
{
char *argv[4] = {"/sbin/modprobe", "-q", (char *)module, (char *)0};
+ char *load_str, *timeout_str;
+ long timeout = 10; /* seconds */
+ long busy_timeout = 10; /* milliseconds */
+ int load = 0, fd;
+ hrtime_t start;
+
+ /* Optionally request module loading */
+ if (!libzfs_module_loaded(module)) {
+ load_str = getenv("ZFS_MODULE_LOADING");
+ if (load_str) {
+ if (!strncasecmp(load_str, "YES", strlen("YES")) ||
+ !strncasecmp(load_str, "ON", strlen("ON")))
+ load = 1;
+ else
+ load = 0;
+ }
- if (libzfs_module_loaded(module))
- return 0;
- return libzfs_run_process("modprobe", argv);
+ if (load) {
+ if (libzfs_run_process("/sbin/modprobe", argv, 0))
+ return (ENOEXEC);
+
+ if (!libzfs_module_loaded(module))
+ return (ENXIO);
+ }
+ }
+
+ /*
+ * Device creation by udev is asynchronous and waiting may be
+ * required. Busy wait for 10ms and then fall back to polling every
+ * 10ms for the allowed timeout (default 10s, max 10m). This is
+ * done to optimize for the common case where the device is
+ * immediately available and to avoid penalizing the possible
+ * case where udev is slow or unable to create the device.
+ */
+ timeout_str = getenv("ZFS_MODULE_TIMEOUT");
+ if (timeout_str) {
+ timeout = strtol(timeout_str, NULL, 0);
+ timeout = MAX(MIN(timeout, (10 * 60)), 0); /* 0 <= N <= 600 */
+ }
+
+ start = gethrtime();
+ do {
+ fd = open(ZFS_DEV, O_RDWR);
+ if (fd >= 0) {
+ (void) close(fd);
+ return (0);
+ } else if (errno != ENOENT) {
+ return (errno);
+ } else if (NSEC2MSEC(gethrtime() - start) < busy_timeout) {
+ sched_yield();
+ } else {
+ usleep(10 * MILLISEC);
+ }
+ } while (NSEC2MSEC(gethrtime() - start) < (timeout * MILLISEC));
+
+ return (ENOENT);
}
libzfs_handle_t *
libzfs_init(void)
{
libzfs_handle_t *hdl;
+ int error;
- 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"));
+ error = libzfs_load_module(ZFS_DRIVER);
+ if (error) {
+ errno = error;
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);
}
return (NULL);
}
- hdl->libzfs_sharetab = fopen("/etc/dfs/sharetab", "r");
+ hdl->libzfs_sharetab = fopen(ZFS_SHARETAB, "r");
+
+ if (libzfs_core_init() != 0) {
+ (void) close(hdl->libzfs_fd);
+ (void) fclose(hdl->libzfs_mnttab);
+ if (hdl->libzfs_sharetab)
+ (void) fclose(hdl->libzfs_sharetab);
+ free(hdl);
+ return (NULL);
+ }
zfs_prop_init();
zpool_prop_init();
+ zpool_feature_init();
libzfs_mnttab_init(hdl);
+ fletcher_4_init();
+
+ if (getenv("ZFS_PROP_DEBUG") != NULL) {
+ hdl->libzfs_prop_debug = B_TRUE;
+ }
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);
- libzfs_fru_clear(hdl, B_TRUE);
namespace_clear(hdl);
libzfs_mnttab_fini(hdl);
+ libzfs_core_fini();
+ fletcher_4_fini();
free(hdl);
}
* Given a name, determine whether or not it's a valid path
* (starts with '/' or "./"). If so, walk the mnttab trying
* to match the device number. If not, treat the path as an
- * fs/vol/snap name.
+ * fs/vol/snap/bkmark name.
*/
zfs_handle_t *
zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)
return (NULL);
}
- rewind(hdl->libzfs_mnttab);
+ /* Reopen MNTTAB to prevent reading stale data from open file */
+ if (freopen(MNTTAB, "r", hdl->libzfs_mnttab) == NULL)
+ return (NULL);
+
while ((ret = getextmntent(hdl->libzfs_mnttab, &entry, 0)) == 0) {
if (makedevice(entry.mnt_major, entry.mnt_minor) ==
statbuf.st_dev) {
return (zfs_open(hdl, entry.mnt_special, ZFS_TYPE_FILESYSTEM));
}
+/*
+ * 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) ||
+ (strncmp(path, ZVOL_ROOT, strlen(ZVOL_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) == 0) {
+ 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, *dup;
+
+ /* Strip redundant slashes if one exists due to ZPOOL_IMPORT_PATH */
+ memset(cmp_name, 0, MAXPATHLEN);
+ dup = strdup(cmp);
+ dir = strtok(dup, "/");
+ while (dir) {
+ strlcat(cmp_name, "/", sizeof (cmp_name));
+ strlcat(cmp_name, dir, sizeof (cmp_name));
+ dir = strtok(NULL, "/");
+ }
+ free(dup);
+
+ if (name[0] != '/')
+ return (zfs_strcmp_shortname(name, cmp_name, wholedisk));
+
+ (void) strlcpy(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);
+}
+
+/*
+ * Given a full path to a device determine if that device appears in the
+ * import search path. If it does return the first match and store the
+ * index in the passed 'order' variable, otherwise return an error.
+ */
+int
+zfs_path_order(char *name, int *order)
+{
+ int i = 0, error = ENOENT;
+ char *dir, *env, *envdup;
+
+ env = getenv("ZPOOL_IMPORT_PATH");
+ if (env) {
+ envdup = strdup(env);
+ dir = strtok(envdup, ":");
+ while (dir) {
+ if (strncmp(name, dir, strlen(dir)) == 0) {
+ *order = i;
+ error = 0;
+ break;
+ }
+ dir = strtok(NULL, ":");
+ i++;
+ }
+ free(envdup);
+ } else {
+ for (i = 0; i < DEFAULT_IMPORT_PATH_SIZE; i++) {
+ if (strncmp(name, zpool_default_import_path[i],
+ strlen(zpool_default_import_path[i])) == 0) {
+ *order = i;
+ error = 0;
+ break;
+ }
+ }
+ }
+
+ return (error);
+}
+
/*
* Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from
* an ioctl().
if (len == 0)
len = 16 * 1024;
zc->zc_nvlist_dst_size = len;
- if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
- zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == 0)
+ zc->zc_nvlist_dst =
+ (uint64_t)(uintptr_t)zfs_alloc(hdl, zc->zc_nvlist_dst_size);
+ if (zc->zc_nvlist_dst == 0)
return (-1);
return (0);
zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc)
{
free((void *)(uintptr_t)zc->zc_nvlist_dst);
- if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
- zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == 0)
+ zc->zc_nvlist_dst =
+ (uint64_t)(uintptr_t)zfs_alloc(hdl, zc->zc_nvlist_dst_size);
+ if (zc->zc_nvlist_dst == 0)
return (-1);
return (0);
free((void *)(uintptr_t)zc->zc_nvlist_conf);
free((void *)(uintptr_t)zc->zc_nvlist_src);
free((void *)(uintptr_t)zc->zc_nvlist_dst);
+ zc->zc_nvlist_conf = 0;
+ zc->zc_nvlist_src = 0;
+ zc->zc_nvlist_dst = 0;
}
static int
int
zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc)
{
- int error;
-
- zc->zc_history = (uint64_t)(uintptr_t)hdl->libzfs_log_str;
- error = ioctl(hdl->libzfs_fd, request, zc);
- if (hdl->libzfs_log_str) {
- free(hdl->libzfs_log_str);
- hdl->libzfs_log_str = NULL;
- }
- zc->zc_history = 0;
-
- return (error);
+ return (ioctl(hdl->libzfs_fd, request, zc));
}
/*
case ZPROP_SRC_RECEIVED:
str = "received";
break;
+
+ default:
+ str = NULL;
+ assert(!"unhandled zprop_source_t");
}
break;
continue;
}
- if (cbp->cb_columns[i + 1] == GET_COL_NONE)
+ if (i == (ZFS_GET_NCOLS - 1) ||
+ cbp->cb_columns[i + 1] == GET_COL_NONE)
(void) printf("%s", str);
else if (cbp->cb_scripted)
(void) printf("%s\t", str);
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'))
- return (10*i);
-
- zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
- "invalid numeric suffix '%s'"), buf);
+ 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);
+
+ if (hdl)
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+ "invalid numeric suffix '%s'"), buf);
return (-1);
}
const char *propname;
char *value;
boolean_t isnone = B_FALSE;
+ boolean_t isauto = B_FALSE;
+ int err = 0;
if (type == ZFS_TYPE_POOL) {
proptype = zpool_prop_get_type(prop);
"'%s' must be a string"), nvpair_name(elem));
goto error;
}
- (void) nvpair_value_string(elem, svalp);
+ err = nvpair_value_string(elem, svalp);
+ if (err != 0) {
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+ "'%s' is invalid"), nvpair_name(elem));
+ goto error;
+ }
if (strlen(*svalp) >= ZFS_MAXPROPLEN) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"'%s' is too long"), nvpair_name(elem));
(void) nvpair_value_string(elem, &value);
if (strcmp(value, "none") == 0) {
isnone = B_TRUE;
- } else if (zfs_nicestrtonum(hdl, value, ivalp)
- != 0) {
+ } else if (strcmp(value, "auto") == 0) {
+ isauto = B_TRUE;
+ } else if (zfs_nicestrtonum(hdl, value, ivalp) != 0) {
goto error;
}
} else if (datatype == DATA_TYPE_UINT64) {
"use 'none' to disable quota/refquota"));
goto error;
}
+
+ /*
+ * Special handling for "*_limit=none". In this case it's not
+ * 0 but UINT64_MAX.
+ */
+ if ((type & ZFS_TYPE_DATASET) && isnone &&
+ (prop == ZFS_PROP_FILESYSTEM_LIMIT ||
+ prop == ZFS_PROP_SNAPSHOT_LIMIT)) {
+ *ivalp = UINT64_MAX;
+ }
+
+ /*
+ * Special handling for setting 'refreservation' to 'auto'. Use
+ * UINT64_MAX to tell the caller to use zfs_fix_auto_resv().
+ * 'auto' is only allowed on volumes.
+ */
+ if (isauto) {
+ switch (prop) {
+ case ZFS_PROP_REFRESERVATION:
+ if ((type & ZFS_TYPE_VOLUME) == 0) {
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+ "'%s=auto' only allowed on "
+ "volumes"), nvpair_name(elem));
+ goto error;
+ }
+ *ivalp = UINT64_MAX;
+ break;
+ default:
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+ "'auto' is invalid value for '%s'"),
+ nvpair_name(elem));
+ goto error;
+ }
+ }
+
break;
case PROP_TYPE_INDEX:
prop = zprop_name_to_prop(propname, type);
- if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type))
+ if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type, B_FALSE))
prop = ZPROP_INVAL;
/*
* 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);
}
projects / zfs / blobdiff