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-rw-r--r--source3/lib/sysquotas.c619
1 files changed, 619 insertions, 0 deletions
diff --git a/source3/lib/sysquotas.c b/source3/lib/sysquotas.c
new file mode 100644
index 0000000..07d28d3
--- /dev/null
+++ b/source3/lib/sysquotas.c
@@ -0,0 +1,619 @@
+/*
+ Unix SMB/CIFS implementation.
+ System QUOTA function wrappers
+ Copyright (C) Stefan (metze) Metzmacher 2003
+
+ 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
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#include "includes.h"
+#include "lib/util_file.h"
+#include "lib/util/smb_strtox.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_QUOTA
+
+#ifdef HAVE_SYS_QUOTAS
+
+#if defined(HAVE_QUOTACTL_4A)
+
+/*#endif HAVE_QUOTACTL_4A */
+#elif defined(HAVE_QUOTACTL_4B)
+
+/*#endif HAVE_QUOTACTL_4B */
+#elif defined(HAVE_QUOTACTL_3)
+
+#error HAVE_QUOTACTL_3 not implemented
+
+/* #endif HAVE_QUOTACTL_3 */
+#else /* NO_QUOTACTL_USED */
+
+#endif /* NO_QUOTACTL_USED */
+
+#if defined(HAVE_MNTENT) && defined(HAVE_REALPATH)
+static int sys_path_to_bdev(const char *path, char **mntpath, char **bdev, char **fs)
+{
+ int ret = -1;
+ SMB_STRUCT_STAT S;
+ FILE *fp;
+ struct mntent *mnt = NULL;
+ SMB_DEV_T devno;
+ char *stat_mntpath = NULL;
+ char *p;
+
+ /* find the block device file */
+ (*mntpath) = NULL;
+ (*bdev) = NULL;
+ (*fs) = NULL;
+
+ if (sys_stat(path, &S, false) != 0) {
+ return -1;
+ }
+
+ devno = S.st_ex_dev ;
+
+ stat_mntpath = sys_realpath(path);
+ if (stat_mntpath == NULL) {
+ DBG_WARNING("realpath(%s) failed - %s\n", path,
+ strerror(errno));
+ goto out;
+ }
+
+ if (sys_stat(stat_mntpath, &S, false) != 0) {
+ DBG_WARNING("cannot stat real path %s - %s\n", stat_mntpath,
+ strerror(errno));
+ goto out;
+ }
+
+ if (S.st_ex_dev != devno) {
+ DBG_WARNING("device on real path has changed\n");
+ goto out;
+ }
+
+ while (true) {
+ char save_ch;
+
+ p = strrchr(stat_mntpath, '/');
+ if (p == NULL) {
+ DBG_ERR("realpath for %s does not begin with a '/'\n",
+ path);
+ goto out;
+ }
+
+ if (p == stat_mntpath) {
+ ++p;
+ }
+
+ save_ch = *p;
+ *p = 0;
+ if (sys_stat(stat_mntpath, &S, false) != 0) {
+ DBG_WARNING("cannot stat real path component %s - %s\n",
+ stat_mntpath, strerror(errno));
+ goto out;
+ }
+ if (S.st_ex_dev != devno) {
+ *p = save_ch;
+ break;
+ }
+
+ if (p <= stat_mntpath + 1) {
+ break;
+ }
+ }
+
+ fp = setmntent(MOUNTED,"r");
+ if (fp == NULL) {
+ goto out;
+ }
+
+ while ((mnt = getmntent(fp))) {
+ if (!strequal(mnt->mnt_dir, stat_mntpath)) {
+ continue;
+ }
+
+ if ( sys_stat(mnt->mnt_dir, &S, false) == -1 )
+ continue ;
+
+ if (S.st_ex_dev == devno) {
+ (*mntpath) = SMB_STRDUP(mnt->mnt_dir);
+ (*bdev) = SMB_STRDUP(mnt->mnt_fsname);
+ (*fs) = SMB_STRDUP(mnt->mnt_type);
+ if ((*mntpath)&&(*bdev)&&(*fs)) {
+ ret = 0;
+ } else {
+ SAFE_FREE(*mntpath);
+ SAFE_FREE(*bdev);
+ SAFE_FREE(*fs);
+ ret = -1;
+ }
+
+ break;
+ }
+ }
+
+ endmntent(fp) ;
+
+out:
+ SAFE_FREE(stat_mntpath);
+ return ret;
+}
+/* #endif HAVE_MNTENT */
+#elif defined(HAVE_DEVNM)
+
+/* we have this on HPUX, ... */
+static int sys_path_to_bdev(const char *path, char **mntpath, char **bdev, char **fs)
+{
+ int ret = -1;
+ char dev_disk[256];
+ SMB_STRUCT_STAT S;
+
+ if (!path||!mntpath||!bdev||!fs)
+ smb_panic("sys_path_to_bdev: called with NULL pointer");
+
+ (*mntpath) = NULL;
+ (*bdev) = NULL;
+ (*fs) = NULL;
+
+ /* find the block device file */
+
+ if ((ret=sys_stat(path, &S, false))!=0) {
+ return ret;
+ }
+
+ if ((ret=devnm(S_IFBLK, S.st_ex_dev, dev_disk, 256, 1))!=0) {
+ return ret;
+ }
+
+ /* we should get the mntpath right...
+ * but I don't know how
+ * --metze
+ */
+ (*mntpath) = SMB_STRDUP(path);
+ (*bdev) = SMB_STRDUP(dev_disk);
+ if ((*mntpath)&&(*bdev)) {
+ ret = 0;
+ } else {
+ SAFE_FREE(*mntpath);
+ SAFE_FREE(*bdev);
+ ret = -1;
+ }
+
+
+ return ret;
+}
+
+/* #endif HAVE_DEVNM */
+#else
+/* we should fake this up...*/
+static int sys_path_to_bdev(const char *path, char **mntpath, char **bdev, char **fs)
+{
+ int ret = -1;
+
+ if (!path||!mntpath||!bdev||!fs)
+ smb_panic("sys_path_to_bdev: called with NULL pointer");
+
+ (*mntpath) = NULL;
+ (*bdev) = NULL;
+ (*fs) = NULL;
+
+ (*mntpath) = SMB_STRDUP(path);
+ if (*mntpath) {
+ ret = 0;
+ } else {
+ SAFE_FREE(*mntpath);
+ ret = -1;
+ }
+
+ return ret;
+}
+#endif
+
+/*********************************************************************
+ Now the list of all filesystem specific quota systems we have found
+**********************************************************************/
+static struct {
+ const char *name;
+ int (*get_quota)(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp);
+ int (*set_quota)(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp);
+} sys_quota_backends[] = {
+#ifdef HAVE_JFS_QUOTA_H
+ {"jfs2", sys_get_jfs2_quota, sys_set_jfs2_quota},
+#endif
+#if defined HAVE_XFS_QUOTAS
+ {"xfs", sys_get_xfs_quota, sys_set_xfs_quota},
+ {"gfs", sys_get_xfs_quota, sys_set_xfs_quota},
+ {"gfs2", sys_get_xfs_quota, sys_set_xfs_quota},
+#endif /* HAVE_XFS_QUOTAS */
+#ifdef HAVE_NFS_QUOTAS
+ {"nfs", sys_get_nfs_quota, sys_set_nfs_quota},
+ {"nfs4", sys_get_nfs_quota, sys_set_nfs_quota},
+#endif /* HAVE_NFS_QUOTAS */
+ {NULL, NULL, NULL}
+};
+
+static int command_get_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
+{
+ const struct loadparm_substitution *lp_sub =
+ loadparm_s3_global_substitution();
+ const char *get_quota_command;
+ char **lines = NULL;
+
+ get_quota_command = lp_get_quota_command(talloc_tos(), lp_sub);
+ if (get_quota_command && *get_quota_command) {
+ const char *p;
+ char *p2;
+ int _id = -1;
+ int error = 0;
+ char **argl = NULL;
+
+ switch(qtype) {
+ case SMB_USER_QUOTA_TYPE:
+ case SMB_USER_FS_QUOTA_TYPE:
+ _id = id.uid;
+ break;
+ case SMB_GROUP_QUOTA_TYPE:
+ case SMB_GROUP_FS_QUOTA_TYPE:
+ _id = id.gid;
+ break;
+ default:
+ DEBUG(0,("invalid quota type.\n"));
+ return -1;
+ }
+
+ argl = str_list_make_empty(talloc_tos());
+ str_list_add_printf(&argl, "%s", get_quota_command);
+ str_list_add_printf(&argl, "%s", path);
+ str_list_add_printf(&argl, "%d", qtype);
+ str_list_add_printf(&argl, "%d", _id);
+ if (argl == NULL) {
+ return -1;
+ }
+
+ DBG_NOTICE("Running command %s %s %d %d\n",
+ get_quota_command,
+ path,
+ qtype,
+ _id);
+
+ lines = file_lines_ploadv(talloc_tos(), argl, NULL);
+ TALLOC_FREE(argl);
+
+ if (lines) {
+ char *line = lines[0];
+
+ DEBUG (3, ("Read output from get_quota, \"%s\"\n", line));
+
+ /* we need to deal with long long unsigned here, if supported */
+
+ dp->qflags = smb_strtoul(line,
+ &p2,
+ 10,
+ &error,
+ SMB_STR_STANDARD);
+ if (error != 0) {
+ goto invalid_param;
+ }
+
+ p = p2;
+ while (p && *p && isspace(*p)) {
+ p++;
+ }
+
+ if (p && *p) {
+ dp->curblocks = STR_TO_SMB_BIG_UINT(p, &p);
+ } else {
+ goto invalid_param;
+ }
+
+ while (p && *p && isspace(*p)) {
+ p++;
+ }
+
+ if (p && *p) {
+ dp->softlimit = STR_TO_SMB_BIG_UINT(p, &p);
+ } else {
+ goto invalid_param;
+ }
+
+ while (p && *p && isspace(*p)) {
+ p++;
+ }
+
+ if (p && *p) {
+ dp->hardlimit = STR_TO_SMB_BIG_UINT(p, &p);
+ } else {
+ goto invalid_param;
+ }
+
+ while (p && *p && isspace(*p)) {
+ p++;
+ }
+
+ if (p && *p) {
+ dp->curinodes = STR_TO_SMB_BIG_UINT(p, &p);
+ } else {
+ goto invalid_param;
+ }
+
+ while (p && *p && isspace(*p)) {
+ p++;
+ }
+
+ if (p && *p) {
+ dp->isoftlimit = STR_TO_SMB_BIG_UINT(p, &p);
+ } else {
+ goto invalid_param;
+ }
+
+ while (p && *p && isspace(*p)) {
+ p++;
+ }
+
+ if (p && *p) {
+ dp->ihardlimit = STR_TO_SMB_BIG_UINT(p, &p);
+ } else {
+ goto invalid_param;
+ }
+
+ while (p && *p && isspace(*p)) {
+ p++;
+ }
+
+ if (p && *p) {
+ dp->bsize = STR_TO_SMB_BIG_UINT(p, NULL);
+ } else {
+ dp->bsize = 1024;
+ }
+
+ TALLOC_FREE(lines);
+ lines = NULL;
+
+ DEBUG (3, ("Parsed output of get_quota, ...\n"));
+
+ DEBUGADD (5,(
+ "qflags:%u curblocks:%llu softlimit:%llu hardlimit:%llu\n"
+ "curinodes:%llu isoftlimit:%llu ihardlimit:%llu bsize:%llu\n",
+ dp->qflags,(long long unsigned)dp->curblocks,
+ (long long unsigned)dp->softlimit,(long long unsigned)dp->hardlimit,
+ (long long unsigned)dp->curinodes,
+ (long long unsigned)dp->isoftlimit,(long long unsigned)dp->ihardlimit,
+ (long long unsigned)dp->bsize));
+ return 0;
+ }
+
+ DEBUG (0, ("get_quota_command failed!\n"));
+ return -1;
+ }
+
+ errno = ENOSYS;
+ return -1;
+
+invalid_param:
+
+ TALLOC_FREE(lines);
+ DEBUG(0,("The output of get_quota_command is invalid!\n"));
+ return -1;
+}
+
+static int command_set_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
+{
+ const struct loadparm_substitution *lp_sub =
+ loadparm_s3_global_substitution();
+ const char *set_quota_command;
+
+ set_quota_command = lp_set_quota_command(talloc_tos(), lp_sub);
+ if (set_quota_command && *set_quota_command) {
+ char **lines = NULL;
+ int _id = -1;
+ char **argl = NULL;
+
+ switch(qtype) {
+ case SMB_USER_QUOTA_TYPE:
+ case SMB_USER_FS_QUOTA_TYPE:
+ _id = id.uid;
+ break;
+ case SMB_GROUP_QUOTA_TYPE:
+ case SMB_GROUP_FS_QUOTA_TYPE:
+ _id = id.gid;
+ break;
+ default:
+ return -1;
+ }
+
+ argl = str_list_make_empty(talloc_tos());
+ str_list_add_printf(&argl, "%s", set_quota_command);
+ str_list_add_printf(&argl, "%s", path);
+ str_list_add_printf(&argl, "%d", qtype);
+ str_list_add_printf(&argl, "%d", _id);
+ str_list_add_printf(&argl, "%u", dp->qflags);
+ str_list_add_printf(
+ &argl, "%llu", (long long unsigned)dp->softlimit);
+ str_list_add_printf(
+ &argl, "%llu", (long long unsigned)dp->hardlimit);
+ str_list_add_printf(
+ &argl, "%llu", (long long unsigned)dp->isoftlimit);
+ str_list_add_printf(
+ &argl, "%llu", (long long unsigned)dp->ihardlimit);
+ str_list_add_printf(
+ &argl, "%llu", (long long unsigned)dp->bsize);
+ if (argl == NULL) {
+ return -1;
+ }
+
+ DBG_NOTICE("Running command "
+ "%s %s %d %d "
+ "%u %llu %llu "
+ "%llu %llu %llu ",
+ set_quota_command,
+ path,
+ qtype,
+ _id,
+ dp->qflags,
+ (long long unsigned)dp->softlimit,
+ (long long unsigned)dp->hardlimit,
+ (long long unsigned)dp->isoftlimit,
+ (long long unsigned)dp->ihardlimit,
+ (long long unsigned)dp->bsize);
+
+ lines = file_lines_ploadv(talloc_tos(), argl, NULL);
+ TALLOC_FREE(argl);
+ if (lines) {
+ char *line = lines[0];
+
+ DEBUG (3, ("Read output from set_quota, \"%s\"\n", line));
+
+ TALLOC_FREE(lines);
+
+ return 0;
+ }
+ DEBUG (0, ("set_quota_command failed!\n"));
+ return -1;
+ }
+
+ errno = ENOSYS;
+ return -1;
+}
+
+int sys_get_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
+{
+ int ret = -1;
+ int i;
+ bool ready = False;
+ char *mntpath = NULL;
+ char *bdev = NULL;
+ char *fs = NULL;
+
+ if (!path||!dp)
+ smb_panic("sys_get_quota: called with NULL pointer");
+
+ if (command_get_quota(path, qtype, id, dp)==0) {
+ return 0;
+ } else if (errno != ENOSYS) {
+ return -1;
+ }
+
+ if ((ret=sys_path_to_bdev(path,&mntpath,&bdev,&fs))!=0) {
+ DEBUG(0,("sys_path_to_bdev() failed for path [%s]!\n",path));
+ return ret;
+ }
+
+ errno = 0;
+ DEBUG(10,("sys_get_quota() uid(%u, %u), fs(%s)\n", (unsigned)getuid(), (unsigned)geteuid(), fs));
+
+ for (i=0;(fs && sys_quota_backends[i].name && sys_quota_backends[i].get_quota);i++) {
+ if (strcmp(fs,sys_quota_backends[i].name)==0) {
+ ret = sys_quota_backends[i].get_quota(mntpath, bdev, qtype, id, dp);
+ if (ret!=0) {
+ DEBUG(3,("sys_get_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s.\n",
+ fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
+ } else {
+ DEBUG(10,("sys_get_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
+ fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
+ }
+ ready = True;
+ break;
+ }
+ }
+
+ if (!ready) {
+ /* use the default vfs quota functions */
+ ret=sys_get_vfs_quota(mntpath, bdev, qtype, id, dp);
+ if (ret!=0) {
+ DEBUG(3,("sys_get_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s\n",
+ "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
+ } else {
+ DEBUG(10,("sys_get_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
+ "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
+ }
+ }
+
+ SAFE_FREE(mntpath);
+ SAFE_FREE(bdev);
+ SAFE_FREE(fs);
+
+ return ret;
+}
+
+int sys_set_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
+{
+ int ret = -1;
+ int i;
+ bool ready = False;
+ char *mntpath = NULL;
+ char *bdev = NULL;
+ char *fs = NULL;
+
+ /* find the block device file */
+
+ if (!path||!dp)
+ smb_panic("get_smb_quota: called with NULL pointer");
+
+ if (command_set_quota(path, qtype, id, dp)==0) {
+ return 0;
+ } else if (errno != ENOSYS) {
+ return -1;
+ }
+
+ if ((ret=sys_path_to_bdev(path,&mntpath,&bdev,&fs))!=0) {
+ DEBUG(0,("sys_path_to_bdev() failed for path [%s]!\n",path));
+ return ret;
+ }
+
+ errno = 0;
+ DEBUG(10,("sys_set_quota() uid(%u, %u)\n", (unsigned)getuid(), (unsigned)geteuid()));
+
+ for (i=0;(fs && sys_quota_backends[i].name && sys_quota_backends[i].set_quota);i++) {
+ if (strcmp(fs,sys_quota_backends[i].name)==0) {
+ ret = sys_quota_backends[i].set_quota(mntpath, bdev, qtype, id, dp);
+ if (ret!=0) {
+ DEBUG(3,("sys_set_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s.\n",
+ fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
+ } else {
+ DEBUG(10,("sys_set_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
+ fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
+ }
+ ready = True;
+ break;
+ }
+ }
+
+ if (!ready) {
+ /* use the default vfs quota functions */
+ ret=sys_set_vfs_quota(mntpath, bdev, qtype, id, dp);
+ if (ret!=0) {
+ DEBUG(3,("sys_set_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s.\n",
+ "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
+ } else {
+ DEBUG(10,("sys_set_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
+ "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
+ }
+ }
+
+ SAFE_FREE(mntpath);
+ SAFE_FREE(bdev);
+ SAFE_FREE(fs);
+
+ return ret;
+}
+
+#else /* HAVE_SYS_QUOTAS */
+ void dummy_sysquotas_c(void);
+
+ void dummy_sysquotas_c(void)
+{
+ return;
+}
+#endif /* HAVE_SYS_QUOTAS */
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 18:49:48 +0000