*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, Whamcloud, Inc.
+ * Copyright (c) 2011, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*/
+#include <stdbool.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <libgen.h>
#include <syslog.h>
-#include <liblustre.h>
-#include <lustre/lustre_user.h>
-#include <lustre/lustre_idl.h>
+#include <libcfs/util/param.h>
+#include <linux/lnet/nidstr.h>
+#include <linux/lustre/lustre_user.h>
+#include <linux/lustre/lustre_idl.h>
#define PERM_PATHNAME "/etc/lustre/perm.conf"
* '*' nid means any nid
* '*' uid means any uid
* the valid values for perms are:
- * setuid/setgid/setgrp/rmtacl -- enable corresponding perm
- * nosetuid/nosetgid/nosetgrp/normtacl -- disable corresponding perm
- * they can be listed together, seperated by ',',
+ * setuid/setgid/setgrp -- enable corresponding perm
+ * nosetuid/nosetgid/nosetgrp -- disable corresponding perm
+ * they can be listed together, separated by ',',
* when perm and noperm are in the same line (item), noperm is preferential,
* when they are in different lines (items), the latter is preferential,
* '*' nid is as default perm, and is not preferential.
static void usage(void)
{
- fprintf(stderr,
- "\nusage: %s {mdtname} {uid}\n"
- "Normally invoked as an upcall from Lustre, set via:\n"
- "/proc/fs/lustre/mdt/${mdtname}/identity_upcall\n",
- progname);
+ fprintf(stderr,
+ "\nusage: %s {-d|mdtname} {uid}\n"
+ "Normally invoked as an upcall from Lustre, set via:\n"
+ "lctl set_param mdt.${mdtname}.identity_upcall={path to upcall}\n"
+ "\t-d: debug, print values to stdout instead of Lustre\n",
+ progname);
}
static int compare_u32(const void *v1, const void *v2)
{
- return (*(__u32 *)v1 - *(__u32 *)v2);
+ return *(__u32 *)v1 - *(__u32 *)v2;
}
static void errlog(const char *fmt, ...)
{
- va_list args;
+ va_list args;
- openlog(progname, LOG_PERROR | LOG_PID, LOG_AUTHPRIV);
+ openlog(progname, LOG_PERROR | LOG_PID, LOG_AUTHPRIV);
- va_start(args, fmt);
- vsyslog(LOG_NOTICE, fmt, args);
- va_end(args);
+ va_start(args, fmt);
+ vsyslog(LOG_WARNING, fmt, args);
+ va_end(args);
- closelog();
+ closelog();
}
int get_groups_local(struct identity_downcall_data *data,
unsigned int ngroups = 0;
int ngroups_tmp;
struct passwd *pw;
- char *pw_name;
- int namelen;
int i;
pw = getpwuid(data->idd_uid);
}
data->idd_gid = pw->pw_gid;
- namelen = sysconf(_SC_LOGIN_NAME_MAX);
- if (namelen < _POSIX_LOGIN_NAME_MAX)
- namelen = _POSIX_LOGIN_NAME_MAX;
- pw_name = malloc(namelen);
- if (!pw_name) {
- errlog("malloc error\n");
- data->idd_err = errno;
- return -1;
- }
-
- memset(pw_name, 0, namelen);
- strncpy(pw_name, pw->pw_name, namelen - 1);
groups = data->idd_groups;
- /* Allocate array of size maxgroups instead of handling two
- * consecutive and potentially racy getgrouplist() calls. */
+ /*
+ * Allocate array of size maxgroups instead of handling two
+ * consecutive and potentially racy getgrouplist() calls.
+ */
groups_tmp = malloc(maxgroups * sizeof(gid_t));
- if (groups_tmp == NULL) {
- free(pw_name);
- errlog("malloc error\n");
+ if (!groups_tmp) {
+ data->idd_err = errno ? errno : ENOMEM;
+ errlog("malloc error=%u\n", data->idd_err);
return -1;
}
ngroups_tmp = maxgroups;
if (getgrouplist(pw->pw_name, pw->pw_gid, groups_tmp, &ngroups_tmp) <
0) {
- free(pw_name);
free(groups_tmp);
- errlog("getgrouplist() error\n");
+ data->idd_err = errno ? errno : EIDRM;
+ errlog("getgrouplist() error for uid %u: error=%u\n",
+ data->idd_uid, data->idd_err);
return -1;
}
qsort(groups, ngroups, sizeof(*groups), compare_u32);
data->idd_ngroups = ngroups;
- free(pw_name);
free(groups_tmp);
return 0;
}
static inline int comment_line(char *line)
{
- char *p = line;
+ char *p = line;
- while (*p && (*p == ' ' || *p == '\t')) p++;
+ while (*p && (*p == ' ' || *p == '\t'))
+ p++;
- if (!*p || *p == '\n' || *p == '#')
- return 1;
- return 0;
+ if (!*p || *p == '\n' || *p == '#')
+ return 1;
+ return 0;
}
static inline int match_uid(uid_t uid, const char *str)
{
- char *end;
- uid_t uid2;
+ char *end;
+ uid_t uid2;
- if(!strcmp(str, "*"))
- return -1;
+ if (!strcmp(str, "*"))
+ return -1;
- uid2 = strtoul(str, &end, 0);
- if (*end)
- return 0;
- return (uid == uid2);
+ uid2 = strtoul(str, &end, 0);
+ if (*end)
+ return 0;
+ return (uid == uid2);
}
typedef struct {
- char *name;
- __u32 bit;
+ char *name;
+ __u32 bit;
} perm_type_t;
static perm_type_t perm_types[] = {
- { "setuid", CFS_SETUID_PERM },
- { "setgid", CFS_SETGID_PERM },
- { "setgrp", CFS_SETGRP_PERM },
- { "rmtacl", CFS_RMTACL_PERM },
- { "rmtown", CFS_RMTOWN_PERM },
- { 0 }
+ { "setuid", CFS_SETUID_PERM },
+ { "setgid", CFS_SETGID_PERM },
+ { "setgrp", CFS_SETGRP_PERM },
+ { "rmtacl", 0 },
+ { "rmtown", 0 },
+ { 0 }
};
static perm_type_t noperm_types[] = {
- { "nosetuid", CFS_SETUID_PERM },
- { "nosetgid", CFS_SETGID_PERM },
- { "nosetgrp", CFS_SETGRP_PERM },
- { "normtacl", CFS_RMTACL_PERM },
- { "normtown", CFS_RMTOWN_PERM },
- { 0 }
+ { "nosetuid", CFS_SETUID_PERM },
+ { "nosetgid", CFS_SETGID_PERM },
+ { "nosetgrp", CFS_SETGRP_PERM },
+ { "normtacl", 0 },
+ { "normtown", 0 },
+ { 0 }
};
int parse_perm(__u32 *perm, __u32 *noperm, char *str)
{
- char *start, *end;
- char name[64];
- perm_type_t *pt;
-
- *perm = 0;
- *noperm = 0;
- start = str;
- while (1) {
- memset(name, 0, sizeof(name));
- end = strchr(start, ',');
- if (!end)
- end = str + strlen(str);
- if (start >= end)
- break;
- strncpy(name, start, end - start);
- for (pt = perm_types; pt->name; pt++) {
- if (!strcasecmp(name, pt->name)) {
- *perm |= pt->bit;
- break;
- }
- }
-
- if (!pt->name) {
- for (pt = noperm_types; pt->name; pt++) {
- if (!strcasecmp(name, pt->name)) {
- *noperm |= pt->bit;
- break;
- }
- }
-
- if (!pt->name) {
- printf("unkown type: %s\n", name);
- return -1;
- }
- }
-
- start = end + 1;
- }
- return 0;
+ char *start, *end;
+ char name[64];
+ perm_type_t *pt;
+
+ *perm = 0;
+ *noperm = 0;
+ start = str;
+ while (1) {
+ size_t len;
+
+ memset(name, 0, sizeof(name));
+ end = strchr(start, ',');
+ if (!end)
+ end = str + strlen(str);
+ if (start >= end)
+ break;
+ len = end - start;
+ if (len >= sizeof(name))
+ return -E2BIG;
+ strncpy(name, start, len);
+ name[len] = '\0';
+ for (pt = perm_types; pt->name; pt++) {
+ if (!strcasecmp(name, pt->name)) {
+ *perm |= pt->bit;
+ break;
+ }
+ }
+
+ if (!pt->name) {
+ for (pt = noperm_types; pt->name; pt++) {
+ if (!strcasecmp(name, pt->name)) {
+ *noperm |= pt->bit;
+ break;
+ }
+ }
+
+ if (!pt->name) {
+ printf("unkown type: %s\n", name);
+ return -1;
+ }
+ }
+
+ start = end + 1;
+ }
+ return 0;
}
-int parse_perm_line(struct identity_downcall_data *data, char *line)
+static int
+parse_perm_line(struct identity_downcall_data *data, char *line, size_t size)
{
- char uid_str[256], nid_str[256], perm_str[256];
- lnet_nid_t nid;
- __u32 perm, noperm;
- int rc, i;
-
- if (data->idd_nperms >= N_PERMS_MAX) {
- errlog("permission count %d > max %d\n",
- data->idd_nperms, N_PERMS_MAX);
- return -1;
- }
-
- rc = sscanf(line, "%s %s %s", nid_str, uid_str, perm_str);
- if (rc != 3) {
- errlog("can't parse line %s\n", line);
- return -1;
- }
-
- if (!match_uid(data->idd_uid, uid_str))
- return 0;
-
- if (!strcmp(nid_str, "*")) {
- nid = LNET_NID_ANY;
- } else {
- nid = libcfs_str2nid(nid_str);
- if (nid == LNET_NID_ANY) {
- errlog("can't parse nid %s\n", nid_str);
- return -1;
- }
- }
-
- if (parse_perm(&perm, &noperm, perm_str)) {
- errlog("invalid perm %s\n", perm_str);
- return -1;
- }
-
- /* merge the perms with the same nid.
- *
- * If there is LNET_NID_ANY in data->idd_perms[i].pdd_nid,
- * it must be data->idd_perms[0].pdd_nid, and act as default perm.
- */
- if (nid != LNET_NID_ANY) {
- int found = 0;
-
- /* search for the same nid */
- for (i = data->idd_nperms - 1; i >= 0; i--) {
- if (data->idd_perms[i].pdd_nid == nid) {
- data->idd_perms[i].pdd_perm =
- (data->idd_perms[i].pdd_perm | perm) &
- ~noperm;
- found = 1;
- break;
- }
- }
-
- /* NOT found, add to tail */
- if (!found) {
- data->idd_perms[data->idd_nperms].pdd_nid = nid;
- data->idd_perms[data->idd_nperms].pdd_perm =
- perm & ~noperm;
- data->idd_nperms++;
- }
- } else {
- if (data->idd_nperms > 0) {
- /* the first one isn't LNET_NID_ANY, need exchange */
- if (data->idd_perms[0].pdd_nid != LNET_NID_ANY) {
- data->idd_perms[data->idd_nperms].pdd_nid =
- data->idd_perms[0].pdd_nid;
- data->idd_perms[data->idd_nperms].pdd_perm =
- data->idd_perms[0].pdd_perm;
- data->idd_perms[0].pdd_nid = LNET_NID_ANY;
- data->idd_perms[0].pdd_perm = perm & ~noperm;
- data->idd_nperms++;
- } else {
- /* only fix LNET_NID_ANY item */
- data->idd_perms[0].pdd_perm =
- (data->idd_perms[0].pdd_perm | perm) &
- ~noperm;
- }
- } else {
- /* it is the first one, only add to head */
- data->idd_perms[0].pdd_nid = LNET_NID_ANY;
- data->idd_perms[0].pdd_perm = perm & ~noperm;
- data->idd_nperms = 1;
- }
- }
-
- return 0;
+ char uid_str[size];
+ char nid_str[size];
+ char perm_str[size];
+ lnet_nid_t nid;
+ __u32 perm, noperm;
+ int rc, i;
+
+ if (data->idd_nperms >= N_PERMS_MAX) {
+ errlog("permission count %d > max %d\n",
+ data->idd_nperms, N_PERMS_MAX);
+ return -1;
+ }
+
+ rc = sscanf(line, "%s %s %s", nid_str, uid_str, perm_str);
+ if (rc != 3) {
+ errlog("can't parse line %s\n", line);
+ return -1;
+ }
+
+ if (!match_uid(data->idd_uid, uid_str))
+ return 0;
+
+ if (!strcmp(nid_str, "*")) {
+ nid = LNET_NID_ANY;
+ } else {
+ nid = libcfs_str2nid(nid_str);
+ if (nid == LNET_NID_ANY) {
+ errlog("can't parse nid %s\n", nid_str);
+ return -1;
+ }
+ }
+
+ if (parse_perm(&perm, &noperm, perm_str)) {
+ errlog("invalid perm %s\n", perm_str);
+ return -1;
+ }
+
+ /*
+ * merge the perms with the same nid.
+ *
+ * If there is LNET_NID_ANY in data->idd_perms[i].pdd_nid,
+ * it must be data->idd_perms[0].pdd_nid, and act as default perm.
+ */
+ if (nid != LNET_NID_ANY) {
+ int found = 0;
+
+ /* search for the same nid */
+ for (i = data->idd_nperms - 1; i >= 0; i--) {
+ if (data->idd_perms[i].pdd_nid == nid) {
+ data->idd_perms[i].pdd_perm =
+ (data->idd_perms[i].pdd_perm | perm) &
+ ~noperm;
+ found = 1;
+ break;
+ }
+ }
+
+ /* NOT found, add to tail */
+ if (!found) {
+ data->idd_perms[data->idd_nperms].pdd_nid = nid;
+ data->idd_perms[data->idd_nperms].pdd_perm =
+ perm & ~noperm;
+ data->idd_nperms++;
+ }
+ } else {
+ if (data->idd_nperms > 0) {
+ /* the first one isn't LNET_NID_ANY, need exchange */
+ if (data->idd_perms[0].pdd_nid != LNET_NID_ANY) {
+ data->idd_perms[data->idd_nperms].pdd_nid =
+ data->idd_perms[0].pdd_nid;
+ data->idd_perms[data->idd_nperms].pdd_perm =
+ data->idd_perms[0].pdd_perm;
+ data->idd_perms[0].pdd_nid = LNET_NID_ANY;
+ data->idd_perms[0].pdd_perm = perm & ~noperm;
+ data->idd_nperms++;
+ } else {
+ /* only fix LNET_NID_ANY item */
+ data->idd_perms[0].pdd_perm =
+ (data->idd_perms[0].pdd_perm | perm) &
+ ~noperm;
+ }
+ } else {
+ /* it is the first one, only add to head */
+ data->idd_perms[0].pdd_nid = LNET_NID_ANY;
+ data->idd_perms[0].pdd_perm = perm & ~noperm;
+ data->idd_nperms = 1;
+ }
+ }
+
+ return 0;
}
int get_perms(struct identity_downcall_data *data)
{
- FILE *fp;
- char line[1024];
-
- fp = fopen(PERM_PATHNAME, "r");
- if (fp == NULL) {
- if (errno == ENOENT) {
- return 0;
- } else {
- errlog("open %s failed: %s\n",
- PERM_PATHNAME, strerror(errno));
- data->idd_err = errno;
- return -1;
- }
- }
-
- while (fgets(line, 1024, fp)) {
- if (comment_line(line))
- continue;
-
- if (parse_perm_line(data, line)) {
- errlog("parse line %s failed!\n", line);
- data->idd_err = EINVAL;
- fclose(fp);
- return -1;
- }
- }
-
- fclose(fp);
- return 0;
+ FILE *fp;
+ char line[PATH_MAX];
+
+ fp = fopen(PERM_PATHNAME, "r");
+ if (!fp) {
+ if (errno == ENOENT)
+ return 0;
+ errlog("open %s failed: %s\n",
+ PERM_PATHNAME, strerror(errno));
+ data->idd_err = errno;
+ return -1;
+ }
+
+ while (fgets(line, sizeof(line), fp)) {
+ if (comment_line(line))
+ continue;
+
+ if (parse_perm_line(data, line, sizeof(line))) {
+ errlog("parse line %s failed!\n", line);
+ data->idd_err = EINVAL;
+ fclose(fp);
+ return -1;
+ }
+ }
+
+ fclose(fp);
+ return 0;
}
static void show_result(struct identity_downcall_data *data)
{
- int i;
-
- if (data->idd_err) {
- errlog("failed to get identity for uid %d: %s\n",
- data->idd_uid, strerror(data->idd_err));
- return;
- }
-
- printf("uid=%d gid=%d", data->idd_uid, data->idd_gid);
- for (i = 0; i < data->idd_ngroups; i++)
- printf(",%u", data->idd_groups[i]);
- printf("\n");
- printf("permissions:\n"
- " nid\t\t\tperm\n");
- for (i = 0; i < data->idd_nperms; i++) {
- struct perm_downcall_data *pdd;
-
- pdd = &data->idd_perms[i];
-
- printf(" "LPX64"\t0x%x\n", pdd->pdd_nid, pdd->pdd_perm);
- }
- printf("\n");
+ int i;
+
+ if (data->idd_err) {
+ errlog("failed to get identity for uid %d: %s\n",
+ data->idd_uid, strerror(data->idd_err));
+ return;
+ }
+
+ printf("uid=%d gid=%d", data->idd_uid, data->idd_gid);
+ for (i = 0; i < data->idd_ngroups; i++)
+ printf(",%u", data->idd_groups[i]);
+ printf("\n");
+ printf("permissions:\n"
+ " nid\t\t\tperm\n");
+ for (i = 0; i < data->idd_nperms; i++) {
+ struct perm_downcall_data *pdd;
+
+ pdd = &data->idd_perms[i];
+
+ printf(" %#jx\t0x%x\n", (uintmax_t)pdd->pdd_nid,
+ pdd->pdd_perm);
+ }
+ printf("\n");
}
int main(int argc, char **argv)
{
- char *end;
- struct identity_downcall_data *data = NULL;
- char procname[1024];
- unsigned long uid;
- int fd, rc = -EINVAL, size, maxgroups;
-
- progname = basename(argv[0]);
- if (argc != 3) {
- usage();
- goto out;
- }
-
- uid = strtoul(argv[2], &end, 0);
- if (*end) {
- errlog("%s: invalid uid '%s'\n", progname, argv[2]);
- goto out;
- }
-
- maxgroups = sysconf(_SC_NGROUPS_MAX);
- if (maxgroups > NGROUPS_MAX)
- maxgroups = NGROUPS_MAX;
-
- size = offsetof(struct identity_downcall_data, idd_groups[maxgroups]);
- data = malloc(size);
- if (!data) {
- errlog("malloc identity downcall data(%d) failed!\n", size);
- rc = -ENOMEM;
- goto out;
- }
-
- memset(data, 0, size);
- data->idd_magic = IDENTITY_DOWNCALL_MAGIC;
- data->idd_uid = uid;
- /* get groups for uid */
- rc = get_groups_local(data, maxgroups);
- if (rc)
- goto downcall;
-
- size = offsetof(struct identity_downcall_data,
- idd_groups[data->idd_ngroups]);
- /* read permission database */
- rc = get_perms(data);
+ char *end;
+ struct identity_downcall_data *data = NULL;
+ glob_t path;
+ unsigned long uid;
+ int fd, rc = -EINVAL, size, maxgroups;
+
+ progname = basename(argv[0]);
+ if (argc != 3) {
+ usage();
+ goto out;
+ }
+
+ uid = strtoul(argv[2], &end, 0);
+ if (*end) {
+ errlog("%s: invalid uid '%s'\n", progname, argv[2]);
+ goto out;
+ }
+
+ maxgroups = sysconf(_SC_NGROUPS_MAX);
+ if (maxgroups > NGROUPS_MAX)
+ maxgroups = NGROUPS_MAX;
+ if (maxgroups == -1) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ size = offsetof(struct identity_downcall_data, idd_groups[maxgroups]);
+ data = malloc(size);
+ if (!data) {
+ errlog("malloc identity downcall data(%d) failed!\n", size);
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ memset(data, 0, size);
+ data->idd_magic = IDENTITY_DOWNCALL_MAGIC;
+ data->idd_uid = uid;
+ /* get groups for uid */
+ rc = get_groups_local(data, maxgroups);
+ if (rc)
+ goto downcall;
+
+ size = offsetof(struct identity_downcall_data,
+ idd_groups[data->idd_ngroups]);
+ /* read permission database */
+ rc = get_perms(data);
downcall:
- if (getenv("L_GETIDENTITY_TEST")) {
- show_result(data);
- rc = 0;
- goto out;
- }
-
- snprintf(procname, sizeof(procname),
- "/proc/fs/lustre/mdt/%s/identity_info", argv[1]);
- fd = open(procname, O_WRONLY);
- if (fd < 0) {
- errlog("can't open file %s: %s\n", procname, strerror(errno));
- rc = -1;
- goto out;
- }
-
- rc = write(fd, data, size);
- close(fd);
- if (rc != size) {
- errlog("partial write ret %d: %s\n", rc, strerror(errno));
- rc = -1;
- } else {
- rc = 0;
- }
+ if (strcmp(argv[1], "-d") == 0 || getenv("L_GETIDENTITY_TEST")) {
+ show_result(data);
+ rc = 0;
+ goto out;
+ }
+
+ rc = cfs_get_param_paths(&path, "mdt/%s/identity_info", argv[1]);
+ if (rc != 0) {
+ rc = -errno;
+ goto out;
+ }
+
+ fd = open(path.gl_pathv[0], O_WRONLY);
+ if (fd < 0) {
+ errlog("can't open file '%s':%s\n", path.gl_pathv[0],
+ strerror(errno));
+ rc = -errno;
+ goto out_params;
+ }
+
+ rc = write(fd, data, size);
+ close(fd);
+ if (rc != size) {
+ errlog("partial write ret %d: %s\n", rc, strerror(errno));
+ rc = -1;
+ } else {
+ rc = 0;
+ }
+out_params:
+ cfs_free_param_data(&path);
out:
- if (data != NULL)
- free(data);
- return rc;
+ if (data)
+ free(data);
+ return rc;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff