diff options
| -rw-r--r-- | booster/src/booster.c | 131 | ||||
| -rw-r--r-- | libglusterfs/src/Makefile.am | 4 | ||||
| -rw-r--r-- | libglusterfs/src/glusterfs_fstab.c | 309 | ||||
| -rw-r--r-- | libglusterfs/src/glusterfs_fstab.h | 82 |
4 files changed, 467 insertions, 59 deletions
diff --git a/booster/src/booster.c b/booster/src/booster.c index afe33a6ab..de5bd3253 100644 --- a/booster/src/booster.c +++ b/booster/src/booster.c @@ -42,6 +42,7 @@ #include <dirent.h> #include <sys/statfs.h> #include <sys/statvfs.h> +#include <glusterfs_fstab.h> #ifndef GF_UNIT_KB #define GF_UNIT_KB 1024 @@ -235,81 +236,97 @@ booster_get_process_fd () #define DEFAULT_BOOSTER_CONF CONFDIR"/booster.conf" #define BOOSTER_CONF_ENV_VAR "GLUSTERFS_BOOSTER_FSTAB" -int -booster_parse_line (char *buf, char **mount_point, - glusterfs_init_params_t *params) +void +clean_init_params (glusterfs_init_params_t *ipars) { - /* Structure of each line in booster config: - * /virtual/mount/point /volume/specification/file volume-name /log/file loglevel cache-timeout - * 0 can be entered for each of volume-name, /log/file, loglevel - * to force default values. - */ - char *inbufptr = NULL; + if (!ipars) + return; - if (!buf || !mount_point || !params) { - goto out; + if (ipars->volume_name) + free (ipars->volume_name); + + if (ipars->specfile) + free (ipars->specfile); + + if (ipars->logfile) + free (ipars->logfile); + + if (ipars->loglevel) + free (ipars->loglevel); + + return; +} + +char * +get_option_value (char *opt) +{ + char *val = NULL; + char *saveptr = NULL; + char *copy_opt = NULL; + char *nextopt = NULL; + char *retval = NULL; + + copy_opt = strdup (opt); + val = strtok_r (copy_opt, "=", &saveptr); + if (val != NULL) { + nextopt = index (val, ','); + if (nextopt) + *nextopt = '\0'; + + retval = strdup (val); } - memset (params, 0, sizeof (*params)); - inbufptr = strtok (buf, " "); - if (inbufptr == NULL) - goto out; - *mount_point = strdup (inbufptr); + free (copy_opt); - inbufptr = strtok (NULL, " "); - if (inbufptr == NULL) - goto out; - params->specfile = strdup (inbufptr); + return retval; +} - inbufptr = strtok (NULL, " "); - if (inbufptr == NULL) - goto out; - params->volume_name = strdup (inbufptr); +void +booster_mount (struct glusterfs_mntent *ent) +{ + char *opt = NULL; + glusterfs_init_params_t ipars; - inbufptr = strtok (NULL, " "); - if (inbufptr == NULL) - goto out; - params->logfile = strdup (inbufptr); + if (!ent) + return; - inbufptr = strtok (NULL, " "); - if (inbufptr == NULL) - goto out; - params->loglevel = strdup (inbufptr); + memset (&ipars, 0, sizeof (glusterfs_init_params_t)); + if (ent->mnt_fsname) + ipars.specfile = strdup (ent->mnt_fsname); - return 0; -out: - return -1; + opt = glusterfs_fstab_hasoption (ent, "subvolume"); + if (opt) + ipars.volume_name = get_option_value (opt); + + opt = glusterfs_fstab_hasoption (ent, "logfile"); + if (opt) + ipars.logfile = get_option_value (opt); + + opt = glusterfs_fstab_hasoption (ent, "loglevel"); + if (opt) + ipars.loglevel = get_option_value (opt); + + glusterfs_mount (ent->mnt_dir, &ipars); + clean_init_params (&ipars); } int booster_configure (char *confpath) { - FILE *fp = NULL; - int ret = -1; - char buf[4096]; - char *mount_point = NULL; - glusterfs_init_params_t params = {0, }; + int ret = -1; + glusterfs_fstab_t *handle = NULL; + struct glusterfs_mntent *ent = NULL; - fp = fopen (confpath, "r"); - if (fp == NULL) { + if (!confpath) goto out; - } - while (1) { - fgets (buf, 4096, fp); - if (feof (fp)) { - break; - } - - mount_point = NULL; - ret = booster_parse_line (buf, &mount_point, ¶ms); - if (ret == -1) { - goto out; - } + handle = glusterfs_fstab_init (confpath, "r"); + if (!handle) + goto out; - /* even if this mount fails, lets continue with others */ - glusterfs_mount (mount_point, ¶ms); - } + while ((ent = glusterfs_fstab_getent (handle)) != NULL) + booster_mount (ent); + glusterfs_fstab_close (handle); ret = 0; out: return ret; diff --git a/libglusterfs/src/Makefile.am b/libglusterfs/src/Makefile.am index 8ff35fbb2..2863c755c 100644 --- a/libglusterfs/src/Makefile.am +++ b/libglusterfs/src/Makefile.am @@ -6,9 +6,9 @@ libglusterfs_la_LIBADD = @LEXLIB@ lib_LTLIBRARIES = libglusterfs.la -libglusterfs_la_SOURCES = dict.c spec.lex.c y.tab.c xlator.c logging.c hashfn.c defaults.c scheduler.c common-utils.c transport.c timer.c inode.c call-stub.c compat.c authenticate.c fd.c compat-errno.c event.c mem-pool.c gf-dirent.c syscall.c iobuf.c +libglusterfs_la_SOURCES = dict.c spec.lex.c y.tab.c xlator.c logging.c hashfn.c defaults.c scheduler.c common-utils.c transport.c timer.c inode.c call-stub.c compat.c authenticate.c fd.c compat-errno.c event.c mem-pool.c gf-dirent.c syscall.c iobuf.c glusterfs_fstab.c -noinst_HEADERS = common-utils.h defaults.h dict.h glusterfs.h hashfn.h logging.h protocol.h scheduler.h xlator.h transport.h stack.h timer.h list.h inode.h call-stub.h compat.h authenticate.h fd.h revision.h compat-errno.h event.h mem-pool.h byte-order.h gf-dirent.h locking.h syscall.h iobuf.h +noinst_HEADERS = common-utils.h defaults.h dict.h glusterfs.h hashfn.h logging.h protocol.h scheduler.h xlator.h transport.h stack.h timer.h list.h inode.h call-stub.h compat.h authenticate.h fd.h revision.h compat-errno.h event.h mem-pool.h byte-order.h gf-dirent.h locking.h syscall.h iobuf.h glusterfs_fstab.h EXTRA_DIST = spec.l spec.y diff --git a/libglusterfs/src/glusterfs_fstab.c b/libglusterfs/src/glusterfs_fstab.c new file mode 100644 index 000000000..b21197b1d --- /dev/null +++ b/libglusterfs/src/glusterfs_fstab.c @@ -0,0 +1,309 @@ +/* Utilities for reading/writing fstab, mtab, etc. + Copyright (C) 1995-2000, 2001, 2002, 2003, 2006 + Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <alloca.h> +#include <stdio.h> +#include <stdio_ext.h> +#include <string.h> +#include <sys/types.h> +#include "glusterfs_fstab.h" +#include <stdlib.h> + +/* Prepare to begin reading and/or writing mount table entries from the + beginning of FILE. MODE is as for `fopen'. */ +glusterfs_fstab_t * +glusterfs_fstab_init (const char *file, const char *mode) +{ + glusterfs_fstab_t *handle = NULL; + /* Extend the mode parameter with "c" to disable cancellation in the + I/O functions. */ + size_t modelen = strlen (mode); + char newmode[modelen + 2]; + memcpy (mempcpy (newmode, mode, modelen), "c", 2); + + handle = calloc (1, sizeof (glusterfs_fstab_t)); + if (!handle) + goto out; + + FILE *result = fopen (file, newmode); + if (result != NULL) { + /* We do the locking ourselves. */ + __fsetlocking (result, FSETLOCKING_BYCALLER); + handle->fp = result; + } else { + free (handle); + handle = NULL; + } + +out: + + return handle; +} + +int +glusterfs_fstab_close (glusterfs_fstab_t *h) +{ + if (!h) + return -1; + + if (h->fp) + fclose (h->fp); + + return 0; +} + +/* Since the values in a line are separated by spaces, a name cannot + contain a space. Therefore some programs encode spaces in names + by the strings "\040". We undo the encoding when reading an entry. + The decoding happens in place. */ +static char * +decode_name (char *buf) +{ + char *rp = buf; + char *wp = buf; + + do + if (rp[0] == '\\' && rp[1] == '0' && rp[2] == '4' && rp[3] == '0') + { + /* \040 is a SPACE. */ + *wp++ = ' '; + rp += 3; + } + else if (rp[0] == '\\' && rp[1] == '0' && rp[2] == '1' && rp[3] == '1') + { + /* \011 is a TAB. */ + *wp++ = '\t'; + rp += 3; + } + else if (rp[0] == '\\' && rp[1] == '0' && rp[2] == '1' && rp[3] == '2') + { + /* \012 is a NEWLINE. */ + *wp++ = '\n'; + rp += 3; + } + else if (rp[0] == '\\' && rp[1] == '\\') + { + /* We have to escape \\ to be able to represent all characters. */ + *wp++ = '\\'; + rp += 1; + } + else if (rp[0] == '\\' && rp[1] == '1' && rp[2] == '3' && rp[3] == '4') + { + /* \134 is also \\. */ + *wp++ = '\\'; + rp += 3; + } + else + *wp++ = *rp; + while (*rp++ != '\0'); + + return buf; +} + + +/* Read one mount table entry from STREAM. Returns a pointer to storage + reused on the next call, or null for EOF or error (use feof/ferror to + check). */ +struct glusterfs_mntent * +__glusterfs_fstab_getent (FILE *stream, struct glusterfs_mntent *mp, + char *buffer, int bufsiz) +{ + char *cp; + char *head; + + flockfile (stream); + do + { + char *end_ptr; + + if (fgets_unlocked (buffer, bufsiz, stream) == NULL) + { + funlockfile (stream); + return NULL; + } + + end_ptr = strchr (buffer, '\n'); + if (end_ptr != NULL) /* chop newline */ + *end_ptr = '\0'; + else + { + /* Not the whole line was read. Do it now but forget it. */ + char tmp[1024]; + while (fgets_unlocked (tmp, sizeof tmp, stream) != NULL) + if (strchr (tmp, '\n') != NULL) + break; + } + + head = buffer + strspn (buffer, " \t"); + /* skip empty lines and comment lines: */ + } + while (head[0] == '\0' || head[0] == '#'); + + cp = strsep (&head, " \t"); + mp->mnt_fsname = cp != NULL ? decode_name (cp) : (char *) ""; + if (head) + head += strspn (head, " \t"); + cp = strsep (&head, " \t"); + mp->mnt_dir = cp != NULL ? decode_name (cp) : (char *) ""; + if (head) + head += strspn (head, " \t"); + cp = strsep (&head, " \t"); + mp->mnt_type = cp != NULL ? decode_name (cp) : (char *) ""; + if (head) + head += strspn (head, " \t"); + cp = strsep (&head, " \t"); + mp->mnt_opts = cp != NULL ? decode_name (cp) : (char *) ""; + switch (head ? sscanf (head, " %d %d ", &mp->mnt_freq, &mp->mnt_passno) : 0) + { + case 0: + mp->mnt_freq = 0; + case 1: + mp->mnt_passno = 0; + case 2: + break; + } + funlockfile (stream); + + return mp; +} + +struct glusterfs_mntent * +glusterfs_fstab_getent (glusterfs_fstab_t *h) +{ + if (!h) + return NULL; + + if (!h->fp) + return NULL; + + return __glusterfs_fstab_getent (h->fp, &h->tmpent, h->buf, + GF_MNTENT_BUFSIZE); +} + +/* We have to use an encoding for names if they contain spaces or tabs. + To be able to represent all characters we also have to escape the + backslash itself. This "function" must be a macro since we use + `alloca'. */ +#define encode_name(name) \ + do { \ + const char *rp = name; \ + \ + while (*rp != '\0') \ + if (*rp == ' ' || *rp == '\t' || *rp == '\\') \ + break; \ + else \ + ++rp; \ + \ + if (*rp != '\0') \ + { \ + /* In the worst case the length of the string can increase to \ + founr times the current length. */ \ + char *wp; \ + \ + rp = name; \ + name = wp = (char *) alloca (strlen (name) * 4 + 1); \ + \ + do \ + if (*rp == ' ') \ + { \ + *wp++ = '\\'; \ + *wp++ = '0'; \ + *wp++ = '4'; \ + *wp++ = '0'; \ + } \ + else if (*rp == '\t') \ + { \ + *wp++ = '\\'; \ + *wp++ = '0'; \ + *wp++ = '1'; \ + *wp++ = '1'; \ + } \ + else if (*rp == '\n') \ + { \ + *wp++ = '\\'; \ + *wp++ = '0'; \ + *wp++ = '1'; \ + *wp++ = '2'; \ + } \ + else if (*rp == '\\') \ + { \ + *wp++ = '\\'; \ + *wp++ = '\\'; \ + } \ + else \ + *wp++ = *rp; \ + while (*rp++ != '\0'); \ + } \ + } while (0) + + +int +glusterfs_fstab_addent (glusterfs_fstab_t *h, + const struct glusterfs_mntent *mnt) +{ + struct glusterfs_mntent mntcopy = *mnt; + if (!h) + return -1; + + if (!h->fp) + return -1; + + if (fseek (h->fp, 0, SEEK_END)) + return -1; + + /* Encode spaces and tabs in the names. */ + encode_name (mntcopy.mnt_fsname); + encode_name (mntcopy.mnt_dir); + encode_name (mntcopy.mnt_type); + encode_name (mntcopy.mnt_opts); + + return (fprintf (h->fp, "%s %s %s %s %d %d\n", + mntcopy.mnt_fsname, + mntcopy.mnt_dir, + mntcopy.mnt_type, + mntcopy.mnt_opts, + mntcopy.mnt_freq, + mntcopy.mnt_passno) + < 0 ? 1 : 0); +} + + +/* Search MNT->mnt_opts for an option matching OPT. + Returns the address of the substring, or null if none found. */ +char * +glusterfs_fstab_hasoption (const struct glusterfs_mntent *mnt, const char *opt) +{ + const size_t optlen = strlen (opt); + char *rest = mnt->mnt_opts, *p; + + while ((p = strstr (rest, opt)) != NULL) + { + if ((p == rest || p[-1] == ',') + && (p[optlen] == '\0' || p[optlen] == '=' || p[optlen] == ',')) + return p; + + rest = strchr (p, ','); + if (rest == NULL) + break; + ++rest; + } + + return NULL; +} diff --git a/libglusterfs/src/glusterfs_fstab.h b/libglusterfs/src/glusterfs_fstab.h new file mode 100644 index 000000000..5d6c6a77f --- /dev/null +++ b/libglusterfs/src/glusterfs_fstab.h @@ -0,0 +1,82 @@ +/* Utilities for reading/writing fstab, mtab, etc. + Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef GLUSTERFS_FSTAB_MNTENT_H +#define GLUSTERFS_FSTAB_MNTENT_H 1 + +#include <features.h> +#include <stdio.h> +#include <paths.h> + + +/* General filesystem types. */ +#define GF_MNTTYPE_IGNORE "ignore" /* Ignore this entry. */ +#define GF_MNTTYPE_NFS "nfs" /* Network file system. */ +#define GF_MNTTYPE_SWAP "swap" /* Swap device. */ + + +/* Generic mount options. */ +#define GF_MNTOPT_DEFAULTS "defaults" /* Use all default options. */ +#define GF_MNTOPT_RO "ro" /* Read only. */ +#define GF_MNTOPT_RW "rw" /* Read/write. */ +#define GF_MNTOPT_SUID "suid" /* Set uid allowed. */ +#define GF_MNTOPT_NOSUID "nosuid" /* No set uid allowed. */ +#define GF_MNTOPT_NOAUTO "noauto" /* Do not auto mount. */ + + +/* Structure describing a mount table entry. */ +struct glusterfs_mntent + { + char *mnt_fsname; /* Device or server for filesystem. */ + char *mnt_dir; /* Directory mounted on. */ + char *mnt_type; /* Type of filesystem: ufs, nfs, etc. */ + char *mnt_opts; /* Comma-separated options for fs. */ + int mnt_freq; /* Dump frequency (in days). */ + int mnt_passno; /* Pass number for `fsck'. */ + }; + +#define GF_MNTENT_BUFSIZE 1024 +typedef struct glusterfs_fstab_handle { + FILE *fp; + char buf[GF_MNTENT_BUFSIZE]; + struct glusterfs_mntent tmpent; +}glusterfs_fstab_t; + + +/* Prepare to begin reading and/or writing mount table entries from the + beginning of FILE. MODE is as for `fopen'. */ +extern glusterfs_fstab_t *glusterfs_fstab_init (const char *file, + const char *mode); + +extern struct glusterfs_mntent *glusterfs_fstab_getent (glusterfs_fstab_t *h); + +/* Write the mount table entry described by MNT to STREAM. + Return zero on success, nonzero on failure. */ +extern int glusterfs_fstab_addent (glusterfs_fstab_t *h, + const struct glusterfs_mntent *mnt); + +/* Close a stream opened with `glusterfs_fstab_init'. */ +extern int glusterfs_fstab_close (glusterfs_fstab_t *h); + +/* Search MNT->mnt_opts for an option matching OPT. + Returns the address of the substring, or null if none found. */ +extern char *glusterfs_fstab_hasoption (const struct glusterfs_mntent *mnt, + const char *opt); + +#endif |