*
* CDDL HEADER END
*/
+
/*
- * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, Joyent, Inc. All rights reserved.
+ * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
+ * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>
+ * Copyright (c) 2017 Datto Inc.
*/
/*
#include <stdlib.h>
#include <strings.h>
#include <unistd.h>
-#include <ctype.h>
#include <math.h>
+#include <sys/stat.h>
#include <sys/mnttab.h>
#include <sys/mntent.h>
#include <sys/types.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>
+#include <libzutil.h>
+#include <sys/zfs_sysfs.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_BADPROP:
return (dgettext(TEXT_DOMAIN, "invalid property value"));
case EZFS_PROPREADONLY:
- return (dgettext(TEXT_DOMAIN, "read only property"));
+ return (dgettext(TEXT_DOMAIN, "read-only property"));
case EZFS_PROPTYPE:
return (dgettext(TEXT_DOMAIN, "property doesn't apply to "
"datasets of this type"));
case EZFS_BADSTREAM:
return (dgettext(TEXT_DOMAIN, "invalid backup stream"));
case EZFS_DSREADONLY:
- return (dgettext(TEXT_DOMAIN, "dataset is read only"));
+ return (dgettext(TEXT_DOMAIN, "dataset is read-only"));
case EZFS_VOLTOOBIG:
return (dgettext(TEXT_DOMAIN, "volume size exceeds limit for "
"this system"));
- case EZFS_VOLHASDATA:
- return (dgettext(TEXT_DOMAIN, "volume has data"));
case EZFS_INVALIDNAME:
return (dgettext(TEXT_DOMAIN, "invalid name"));
case EZFS_BADRESTORE:
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:
return (dgettext(TEXT_DOMAIN, "smb remove share failed"));
case EZFS_SHARESMBFAILED:
return (dgettext(TEXT_DOMAIN, "smb add share failed"));
- case EZFS_ISCSISVCUNAVAIL:
- return (dgettext(TEXT_DOMAIN,
- "iscsitgt service need to be enabled by "
- "a privileged user"));
- case EZFS_DEVLINKS:
- return (dgettext(TEXT_DOMAIN, "failed to create /dev links"));
case EZFS_PERM:
return (dgettext(TEXT_DOMAIN, "permission denied"));
case EZFS_NOSPC:
return (dgettext(TEXT_DOMAIN, "out of space"));
+ case EZFS_FAULT:
+ return (dgettext(TEXT_DOMAIN, "bad address"));
case EZFS_IO:
return (dgettext(TEXT_DOMAIN, "I/O error"));
case EZFS_INTR:
return (dgettext(TEXT_DOMAIN, "recursive dataset dependency"));
case EZFS_NOHISTORY:
return (dgettext(TEXT_DOMAIN, "no history available"));
- case EZFS_UNSHAREISCSIFAILED:
- return (dgettext(TEXT_DOMAIN,
- "iscsitgtd failed request to unshare"));
- case EZFS_SHAREISCSIFAILED:
- return (dgettext(TEXT_DOMAIN,
- "iscsitgtd failed request to share"));
case EZFS_POOLPROPS:
return (dgettext(TEXT_DOMAIN, "failed to retrieve "
"pool properties"));
case EZFS_NODELEGATION:
return (dgettext(TEXT_DOMAIN, "delegated administration is "
"disabled on pool"));
- case EZFS_PERMRDONLY:
- return (dgettext(TEXT_DOMAIN, "snapshot permissions cannot be"
- " modified"));
case EZFS_BADCACHE:
return (dgettext(TEXT_DOMAIN, "invalid or missing cache file"));
case EZFS_ISL2CACHE:
case EZFS_NOTSUP:
return (dgettext(TEXT_DOMAIN, "operation not supported "
"on this dataset"));
+ case EZFS_IOC_NOTSUPPORTED:
+ return (dgettext(TEXT_DOMAIN, "operation not supported by "
+ "zfs kernel module"));
case EZFS_ACTIVE_SPARE:
return (dgettext(TEXT_DOMAIN, "pool has active shared spare "
"device"));
case EZFS_REFTAG_HOLD:
return (dgettext(TEXT_DOMAIN, "tag already exists on this "
"dataset"));
+ case EZFS_TAGTOOLONG:
+ return (dgettext(TEXT_DOMAIN, "tag too long"));
+ case EZFS_PIPEFAILED:
+ return (dgettext(TEXT_DOMAIN, "pipe create failed"));
+ case EZFS_THREADCREATEFAILED:
+ return (dgettext(TEXT_DOMAIN, "thread create failed"));
+ 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"));
+ case EZFS_NO_SCRUB:
+ return (dgettext(TEXT_DOMAIN, "there is no active scrub"));
+ case EZFS_DIFF:
+ return (dgettext(TEXT_DOMAIN, "unable to generate diffs"));
+ case EZFS_DIFFDATA:
+ 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_TOOMANY:
+ return (dgettext(TEXT_DOMAIN, "argument list too long"));
+ case EZFS_INITIALIZING:
+ return (dgettext(TEXT_DOMAIN, "currently initializing"));
+ case EZFS_NO_INITIALIZE:
+ return (dgettext(TEXT_DOMAIN, "there is no active "
+ "initialization"));
+ case EZFS_WRONG_PARENT:
+ return (dgettext(TEXT_DOMAIN, "invalid parent dataset"));
+ case EZFS_TRIMMING:
+ return (dgettext(TEXT_DOMAIN, "currently trimming"));
+ case EZFS_NO_TRIM:
+ return (dgettext(TEXT_DOMAIN, "there is no active trim"));
+ case EZFS_TRIM_NOTSUP:
+ return (dgettext(TEXT_DOMAIN, "trim operations are not "
+ "supported by this device"));
+ case EZFS_NO_RESILVER_DEFER:
+ return (dgettext(TEXT_DOMAIN, "this action requires the "
+ "resilver_defer feature"));
+ case EZFS_EXPORT_IN_PROGRESS:
+ return (dgettext(TEXT_DOMAIN, "pool export in progress"));
case EZFS_UNKNOWN:
return (dgettext(TEXT_DOMAIN, "unknown error"));
default:
zfs_verror(hdl, EZFS_IO, fmt, ap);
return (-1);
+ case EFAULT:
+ zfs_verror(hdl, EZFS_FAULT, fmt, ap);
+ return (-1);
+
case EINTR:
zfs_verror(hdl, EZFS_INTR, fmt, ap);
return (-1);
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,
zfs_verror(hdl, EZFS_BUSY, fmt, ap);
break;
case EROFS:
- zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
- "snapshot permissions cannot be modified"));
- zfs_verror(hdl, EZFS_PERMRDONLY, fmt, ap);
+ zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
break;
case ENAMETOOLONG:
zfs_verror(hdl, EZFS_NAMETOOLONG, fmt, ap);
"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;
+ case ZFS_ERR_UNKNOWN_SEND_STREAM_FEATURE:
+ case ZFS_ERR_IOC_CMD_UNAVAIL:
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "the loaded zfs "
+ "module does not support this operation. A reboot may "
+ "be required to enable this operation."));
+ zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap);
+ break;
+ case ZFS_ERR_IOC_ARG_UNAVAIL:
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "the loaded zfs "
+ "module does not support an option for this operation. "
+ "A reboot may be required to enable this option."));
+ zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap);
+ break;
+ case ZFS_ERR_IOC_ARG_REQUIRED:
+ case ZFS_ERR_IOC_ARG_BADTYPE:
+ zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap);
+ break;
+ case ZFS_ERR_WRONG_PARENT:
+ zfs_verror(hdl, EZFS_WRONG_PARENT, fmt, ap);
+ break;
default:
- zfs_error_aux(hdl, strerror(errno));
+ zfs_error_aux(hdl, strerror(error));
zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
break;
}
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 EDQUOT:
zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
return (-1);
+
case EAGAIN:
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"pool I/O is currently suspended"));
zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
break;
+ 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;
+ case ZFS_ERR_EXPORT_IN_PROGRESS:
+ zfs_verror(hdl, EZFS_EXPORT_IN_PROGRESS, fmt, ap);
+ break;
+ case ZFS_ERR_IOC_CMD_UNAVAIL:
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "the loaded zfs "
+ "module does not support this operation. A reboot may "
+ "be required to enable this operation."));
+ zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap);
+ break;
+ case ZFS_ERR_IOC_ARG_UNAVAIL:
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "the loaded zfs "
+ "module does not support an option for this operation. "
+ "A reboot may be required to enable this option."));
+ zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap);
+ break;
+ case ZFS_ERR_IOC_ARG_REQUIRED:
+ case ZFS_ERR_IOC_ARG_BADTYPE:
+ zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap);
+ break;
default:
zfs_error_aux(hdl, strerror(error));
zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
return (data);
}
+/*
+ * A safe form of asprintf() which will die if the allocation fails.
+ */
+/*PRINTFLIKE2*/
+char *
+zfs_asprintf(libzfs_handle_t *hdl, const char *fmt, ...)
+{
+ va_list ap;
+ char *ret;
+ int err;
+
+ va_start(ap, fmt);
+
+ err = vasprintf(&ret, fmt, ap);
+
+ va_end(ap);
+
+ if (err < 0)
+ (void) no_memory(hdl);
+
+ return (ret);
+}
+
/*
* A safe form of realloc(), which also zeroes newly allocated space.
*/
return (ret);
}
+void
+libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr)
+{
+ 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);
+}
+
+
/*
- * Convert a number to an appropriately human-readable output.
+ * 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.
*/
-void
-zfs_nicenum(uint64_t num, char *buf, size_t buflen)
+static int
+libzfs_read_stdout_from_fd(int fd, char **lines[])
{
- uint64_t n = num;
- int index = 0;
- char u;
- while (n >= 1024) {
- n /= 1024;
- index++;
+ 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(fp);
+ *lines = tmp_lines;
+ return (lines_cnt);
+}
- u = " KMGTPE"[index];
+static int
+libzfs_run_process_impl(const char *path, char *argv[], char *env[], int flags,
+ char **lines[], int *lines_cnt)
+{
+ pid_t pid;
+ int error, devnull_fd;
+ int link[2];
- if (index == 0) {
- (void) snprintf(buf, buflen, "%llu", n);
- } else if ((num & ((1ULL << 10 * index) - 1)) == 0) {
- /*
- * If this is an even multiple of the base, always display
- * without any decimal precision.
- */
- (void) snprintf(buf, buflen, "%llu%c", n, u);
- } else {
- /*
- * We want to choose a precision that reflects the best choice
- * for fitting in 5 characters. This can get rather tricky when
- * we have numbers that are very close to an order of magnitude.
- * For example, when displaying 10239 (which is really 9.999K),
- * we want only a single place of precision for 10.0K. We could
- * develop some complex heuristics for this, but it's much
- * easier just to try each combination in turn.
- */
- int i;
- for (i = 2; i >= 0; i--) {
- if (snprintf(buf, buflen, "%.*f%c", i,
- (double)num / (1ULL << 10 * index), u) <= 5)
- break;
+ /*
+ * 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) {
+ /* 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 ((error = waitpid(pid, &status, 0)) == -1 &&
+ errno == EINTR) { }
+ if (error < 0 || !WIFEXITED(status))
+ return (-1);
+
+ if (lines != NULL) {
+ close(link[1]);
+ *lines_cnt = libzfs_read_stdout_from_fd(link[0], lines);
}
+ return (WEXITSTATUS(status));
}
+
+ 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_print_on_error(libzfs_handle_t *hdl, boolean_t printerr)
+libzfs_free_str_array(char **strs, int count)
{
- hdl->libzfs_printerr = printerr;
+ 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 (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;
+
+ error = libzfs_load_module(ZFS_DRIVER);
+ if (error) {
+ errno = error;
+ return (NULL);
+ }
- if ((hdl = calloc(sizeof (libzfs_handle_t), 1)) == NULL) {
+ if ((hdl = calloc(1, sizeof (libzfs_handle_t))) == NULL) {
return (NULL);
}
return (NULL);
}
+#ifdef HAVE_SETMNTENT
+ if ((hdl->libzfs_mnttab = setmntent(MNTTAB, "r")) == NULL) {
+#else
if ((hdl->libzfs_mnttab = fopen(MNTTAB, "r")) == NULL) {
+#endif
(void) close(hdl->libzfs_fd);
free(hdl);
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;
+ }
+
+ /*
+ * For testing, remove some settable properties and features
+ */
+ if (libzfs_envvar_is_set("ZFS_SYSFS_PROP_SUPPORT_TEST")) {
+ zprop_desc_t *proptbl;
+
+ proptbl = zpool_prop_get_table();
+ proptbl[ZPOOL_PROP_COMMENT].pd_zfs_mod_supported = B_FALSE;
+
+ proptbl = zfs_prop_get_table();
+ proptbl[ZFS_PROP_DNODESIZE].pd_zfs_mod_supported = B_FALSE;
+
+ zfeature_info_t *ftbl = spa_feature_table;
+ ftbl[SPA_FEATURE_LARGE_BLOCKS].fi_zfs_mod_supported = B_FALSE;
+ }
return (hdl);
}
{
(void) close(hdl->libzfs_fd);
if (hdl->libzfs_mnttab)
+#ifdef HAVE_SETMNTENT
+ (void) endmntent(hdl->libzfs_mnttab);
+#else
(void) fclose(hdl->libzfs_mnttab);
+#endif
if (hdl->libzfs_sharetab)
(void) fclose(hdl->libzfs_sharetab);
zfs_uninit_libshare(hdl);
- if (hdl->libzfs_log_str)
- (void) free(hdl->libzfs_log_str);
zpool_free_handles(hdl);
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) {
zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len)
{
if (len == 0)
- len = 2048;
+ 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)) == NULL)
+ 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))
- == NULL)
+ 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));
}
/*
"PROPERTY"));
cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN,
"VALUE"));
+ cbp->cb_colwidths[GET_COL_RECVD] = strlen(dgettext(TEXT_DOMAIN,
+ "RECEIVED"));
cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN,
"SOURCE"));
* inheriting from the longest name. This is acceptable because in the
* majority of cases 'SOURCE' is the last column displayed, and we don't
* use the width anyway. Note that the 'VALUE' column can be oversized,
- * if the name of the property is much longer the any values we find.
+ * if the name of the property is much longer than any values we find.
*/
for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) {
/*
pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE])
cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width;
+ /* 'RECEIVED' column. */
+ if (pl != cbp->cb_proplist &&
+ pl->pl_recvd_width > cbp->cb_colwidths[GET_COL_RECVD])
+ cbp->cb_colwidths[GET_COL_RECVD] = pl->pl_recvd_width;
+
/*
* 'NAME' and 'SOURCE' columns
*/
/*
* Now go through and print the headers.
*/
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < ZFS_GET_NCOLS; i++) {
switch (cbp->cb_columns[i]) {
case GET_COL_NAME:
title = dgettext(TEXT_DOMAIN, "NAME");
case GET_COL_VALUE:
title = dgettext(TEXT_DOMAIN, "VALUE");
break;
+ case GET_COL_RECVD:
+ title = dgettext(TEXT_DOMAIN, "RECEIVED");
+ break;
case GET_COL_SOURCE:
title = dgettext(TEXT_DOMAIN, "SOURCE");
break;
}
if (title != NULL) {
- if (i == 3 || cbp->cb_columns[i + 1] == 0)
+ if (i == (ZFS_GET_NCOLS - 1) ||
+ cbp->cb_columns[i + 1] == GET_COL_NONE)
(void) printf("%s", title);
else
(void) printf("%-*s ",
void
zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
const char *propname, const char *value, zprop_source_t sourcetype,
- const char *source)
+ const char *source, const char *recvd_value)
{
int i;
- const char *str;
+ const char *str = NULL;
char buf[128];
/*
if (cbp->cb_first)
zprop_print_headers(cbp, cbp->cb_type);
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < ZFS_GET_NCOLS; i++) {
switch (cbp->cb_columns[i]) {
case GET_COL_NAME:
str = name;
"inherited from %s", source);
str = buf;
break;
+ case ZPROP_SRC_RECEIVED:
+ str = "received";
+ break;
+
+ default:
+ str = NULL;
+ assert(!"unhandled zprop_source_t");
}
break;
+ case GET_COL_RECVD:
+ str = (recvd_value == NULL ? "-" : recvd_value);
+ break;
+
default:
continue;
}
- if (cbp->cb_columns[i + 1] == 0)
+ 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);
(void) printf("%-*s ",
cbp->cb_colwidths[cbp->cb_columns[i]],
str);
-
}
(void) printf("\n");
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);
}
return (-1);
}
- /* Rely on stroull() to process the numeric portion. */
+ /* Rely on strtoull() to process the numeric portion. */
errno = 0;
*num = strtoull(value, &end, 10);
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);
}
{
return (zprop_iter_common(func, cb, show_all, ordered, type));
}
+
+/*
+ * Fill given version buffer with zfs userland version
+ */
+void
+zfs_version_userland(char *version, int len)
+{
+ (void) strlcpy(version, ZFS_META_ALIAS, len);
+}
+
+/*
+ * Fill given version buffer with zfs kernel version read from ZFS_SYSFS_DIR
+ * Returns 0 on success, and -1 on error (with errno set)
+ */
+int
+zfs_version_kernel(char *version, int len)
+{
+ int _errno;
+ int fd;
+ int rlen;
+
+ if ((fd = open(ZFS_SYSFS_DIR "/version", O_RDONLY)) == -1)
+ return (-1);
+
+ if ((rlen = read(fd, version, len)) == -1) {
+ version[0] = '\0';
+ _errno = errno;
+ (void) close(fd);
+ errno = _errno;
+ return (-1);
+ }
+
+ version[rlen-1] = '\0'; /* discard '\n' */
+
+ if (close(fd) == -1)
+ return (-1);
+
+ return (0);
+}
+
+/*
+ * Prints both zfs userland and kernel versions
+ * Returns 0 on success, and -1 on error (with errno set)
+ */
+int
+zfs_version_print(void)
+{
+ char zver_userland[128];
+ char zver_kernel[128];
+
+ if (zfs_version_kernel(zver_kernel, sizeof (zver_kernel)) == -1) {
+ fprintf(stderr, "zfs_version_kernel() failed: %s\n",
+ strerror(errno));
+ return (-1);
+ }
+
+ zfs_version_userland(zver_userland, sizeof (zver_userland));
+
+ (void) printf("%s\n", zver_userland);
+ (void) printf("zfs-kmod-%s\n", zver_kernel);
+
+ return (0);
+}
projects / zfs / blobdiff