/*
- $Id: cmd_dbd.c,v 1.21 2009-12-21 06:41:09 franklahm Exp $
-
Copyright (c) 2009 Frank Lahm <franklahm@gmail.com>
This program is free software; you can redistribute it and/or modify
#include <atalk/logger.h>
#include <atalk/cnid_dbd_private.h>
#include <atalk/volinfo.h>
+#include <atalk/util.h>
+
#include "cmd_dbd.h"
#include "dbd.h"
#include "dbif.h"
#include "db_param.h"
-#define LOCKFILENAME "lock"
#define DBOPTIONS (DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN)
int nocniddb = 0; /* Dont open CNID database, only scan filesystem */
-volatile sig_atomic_t alarmed;
+struct volinfo volinfo; /* needed by pack.c:idxname() */
+volatile sig_atomic_t alarmed; /* flags for signals */
+int db_locked; /* have we got the fcntl lock on lockfile ? */
static DBD *dbd;
static int verbose; /* Logging flag */
static struct db_param db_param = {
NULL, /* Volume dirpath */
1, /* bdb logfile autoremove */
- 64 * 1024 * 1024, /* bdb cachesize */
- -1, /* not used ... */
- -1,
- "",
- -1,
- -1,
- -1
+ 64 * 1024, /* bdb cachesize (64 MB) */
+ DEFAULT_MAXLOCKS, /* maxlocks */
+ DEFAULT_MAXLOCKOBJS, /* maxlockobjs */
+ 0, /* flush_interval */
+ 0, /* flush_frequency */
+ 0, /* usock_file */
+ -1, /* fd_table_size */
+ -1, /* idle_timeout */
+ -1 /* max_vols */
};
-static char dbpath[PATH_MAX]; /* Path to the dbd database */
+static char dbpath[MAXPATHLEN+1]; /* Path to the dbd database */
/*
Provide some logging
}
}
-static int get_lock(const char *dbpath)
-{
- int lockfd;
- char lockpath[PATH_MAX];
- struct flock lock;
- struct stat st;
-
- if ( (strlen(dbpath) + strlen(LOCKFILENAME+1)) > (PATH_MAX - 1) ) {
- dbd_log( LOGSTD, ".AppleDB pathname too long");
- exit(EXIT_FAILURE);
- }
- strncpy(lockpath, dbpath, PATH_MAX - 1);
- strcat(lockpath, "/");
- strcat(lockpath, LOCKFILENAME);
-
- if ((lockfd = open(lockpath, O_RDWR | O_CREAT, 0644)) < 0) {
- dbd_log( LOGSTD, "Error opening lockfile: %s", strerror(errno));
- exit(EXIT_FAILURE);
- }
-
- if ((stat(dbpath, &st)) != 0) {
- dbd_log( LOGSTD, "Error statting lockfile: %s", strerror(errno));
- exit(EXIT_FAILURE);
- }
-
- if ((chown(lockpath, st.st_uid, st.st_gid)) != 0) {
- dbd_log( LOGSTD, "Error inheriting lockfile permissions: %s", strerror(errno));
- exit(EXIT_FAILURE);
- }
-
- lock.l_start = 0;
- lock.l_whence = SEEK_SET;
- lock.l_len = 0;
- lock.l_type = F_WRLCK;
-
- if (fcntl(lockfd, F_SETLK, &lock) < 0) {
- if (errno == EACCES || errno == EAGAIN) {
- if (exclusive) {
- dbd_log( LOGSTD, "Database is in use and exlusive was requested", strerror(errno));
- exit(EXIT_FAILURE);
- };
- } else {
- dbd_log( LOGSTD, "Error getting fcntl F_WRLCK on lockfile: %s", strerror(errno));
- exit(EXIT_FAILURE);
- }
- }
-
- return lockfd;
-}
-
-static void free_lock(int lockfd)
-{
- struct flock lock;
-
- lock.l_start = 0;
- lock.l_whence = SEEK_SET;
- lock.l_len = 0;
- lock.l_type = F_UNLCK;
- fcntl(lockfd, F_SETLK, &lock);
- close(lockfd);
-}
-
static void usage (void)
{
- printf("Usage: dbd [-e|-
v|-x] -d [-i] | -s [-n]| -r [-f] | -u <path to netatalk volume>\n"
+ printf("Usage: dbd [-e|-
t|-v|-x] -d [-i] | -s [-c|-n]| -r [-c|-f] | -u <path to netatalk volume>\n"
"dbd can dump, scan, reindex and rebuild Netatalk dbd CNID databases.\n"
"dbd must be run with appropiate permissions i.e. as root.\n\n"
"Main commands are:\n"
" -d Dump CNID database\n"
- " Option: -i dump indexes too\n"
+ " Option: -i dump indexes too\n\n"
" -s Scan volume:\n"
" 1. Compare CNIDs in database with volume\n"
" 2. Check if .AppleDouble dirs exist\n"
" 6. Check name encoding by roundtripping, log on error\n"
" 7. Check for orphaned CNIDs in database (requires -e)\n"
" 8. Open and close adouble files\n"
- " Option: -n Don't open CNID database, skip CNID checks\n"
+ " Options: -c Don't check .AppleDouble stuff, only ckeck orphaned.\n"
+ " -n Don't open CNID database, skip CNID checks\n\n"
" -r Rebuild volume:\n"
" 1. Sync CNIDSs in database with volume\n"
" 2. Make sure .AppleDouble dir exist, create if missing\n"
" 6. Check name encoding by roundtripping, log on error\n"
" 7. Check for orphaned CNIDs in database (requires -e)\n"
" 8. Open and close adouble files\n"
- " Option: -f wipe database and rebuild from IDs stored in AppleDouble files,\n"
- " only available for volumes without 'nocnidcache' option. Implies -e.\n"
+ " Options: -c Don't create .AppleDouble stuff, only cleanup orphaned.\n"
+ " -f wipe database and rebuild from IDs stored in AppleDouble files,\n"
+ " only available for volumes without 'nocnidcache' option. Implies -e.\n\n"
" -u Prepare upgrade:\n"
" Before installing an upgraded version of Netatalk that is linked against\n"
" a newer BerkeleyDB lib, run `dbd -u ...` from the OLD Netatalk pior to\n"
"General options:\n"
" -e only work on inactive volumes and lock them (exclusive)\n"
" -x rebuild indexes (just for completeness, mostly useless!)\n"
+ " -t show statistics while running\n"
" -v verbose\n\n"
"WARNING:\n"
"For -r -f restore of the CNID database from the adouble files, the CNID must of course\n"
int dump=0, scan=0, rebuild=0, prep_upgrade=0, rebuildindexes=0, dumpindexes=0, force=0;
dbd_flags_t flags = 0;
char *volpath;
- struct volinfo volinfo;
int cdir;
if (geteuid() != 0) {
/* Inhereting perms in ad_mkdir etc requires this */
ad_setfuid(0);
- while ((c = getopt(argc, argv, ":dsnruvxife")) != -1) {
+ while ((c = getopt(argc, argv, ":cdefinrstuvx")) != -1) {
switch(c) {
+ case 'c':
+ flags |= DBD_FLAGS_CLEANUP;
+ break;
case 'd':
dump = 1;
break;
flags |= DBD_FLAGS_SCAN;
break;
case 'n':
- nocniddb = 1;
+ nocniddb = 1; /* FIXME: this could/should be a flag too for consistency */
break;
case 'r':
rebuild = 1;
break;
+ case 't':
+ flags |= DBD_FLAGS_STATS;
+ break;
case 'u':
prep_upgrade = 1;
break;
}
volpath = argv[optind];
+ setvbuf(stdout, (char *) NULL, _IONBF, 0);
+
/* Remember cwd */
if ((cdir = open(".", O_RDONLY)) < 0) {
dbd_log( LOGSTD, "Can't open dir: %s", strerror(errno));
/* Setup logging. Should be portable among *NIXes */
if (!verbose)
- setuplog("console log_info /dev/tty");
+ setuplog("default log_info /dev/tty");
else
- setuplog("console log_debug /dev/tty");
+ setuplog("default log_debug /dev/tty");
/* Load .volinfo file */
if (loadvolinfo(volpath, &volinfo) == -1) {
exit(EXIT_FAILURE);
}
+ /* Enuser dbpath is there, create if necessary */
+ struct stat st;
+ if (stat(volinfo.v_dbpath, &st) != 0) {
+ if (errno != ENOENT) {
+ dbd_log( LOGSTD, "Can't stat dbpath \"%s\": %s", volinfo.v_dbpath, strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ if ((mkdir(volinfo.v_dbpath, 0755)) != 0) {
+ dbd_log( LOGSTD, "Can't create dbpath \"%s\": %s", dbpath, strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ }
+
/* Put "/.AppleDB" at end of volpath, get path from volinfo file */
- if ( (strlen(volinfo.v_dbpath) + strlen("/.AppleDB")) > (PATH_MAX - 1) ) {
+ if ( (strlen(volinfo.v_dbpath) + strlen("/.AppleDB")) > MAXPATHLEN ) {
dbd_log( LOGSTD, "Volume pathname too long");
exit(EXIT_FAILURE);
}
- strncpy(dbpath, volinfo.v_dbpath, PATH_MAX - 9 - 1);
+ strncpy(dbpath, volinfo.v_dbpath, MAXPATHLEN - strlen("/.AppleDB"));
strcat(dbpath, "/.AppleDB");
/* Check or create dbpath */
close(dbdirfd);
}
- /*
- Before we do anything else, check if there is an instance of cnid_dbd
- running already and silently exit if yes.
- */
- lockfd = get_lock(dbpath);
+ /* Get db lock */
+ if ((db_locked = get_lock(LOCK_EXCL, dbpath)) == -1)
+ goto exit_failure;
+ if (db_locked != LOCK_EXCL) {
+ /* Couldn't get exclusive lock, try shared lock if -e wasn't requested */
+ if (exclusive) {
+ dbd_log(LOGSTD, "Database is in use and exlusive was requested");
+ goto exit_failure;
+ }
+ if ((db_locked = get_lock(LOCK_SHRD, NULL)) != LOCK_SHRD)
+ goto exit_failure;
+ }
/* Prepare upgrade ? */
if (prep_upgrade) {
- if (dbif_prep_upgrade(dbpath))
+ if (dbif_env_remove(dbpath))
goto exit_failure;
goto exit_success;
}
/* Check if -f is requested and wipe db if yes */
if ((flags & DBD_FLAGS_FORCE) && rebuild && (volinfo.v_flags & AFPVOL_CACHE)) {
char cmd[8 + MAXPATHLEN];
- snprintf(cmd, 8 + MAXPATHLEN, "rm -f %s/*", dbpath);
+ if ((db_locked = get_lock(LOCK_FREE, NULL)) != 0)
+ goto exit_failure;
+
+ snprintf(cmd, 8 + MAXPATHLEN, "rm -rf \"%s\"", dbpath);
dbd_log( LOGDEBUG, "Removing old database of volume: '%s'", volpath);
system(cmd);
+ if ((mkdir(dbpath, 0755)) != 0) {
+ dbd_log( LOGSTD, "Can't create dbpath \"%s\": %s", dbpath, strerror(errno));
+ exit(EXIT_FAILURE);
+ }
dbd_log( LOGDEBUG, "Removed old database.");
+ if ((db_locked = get_lock(LOCK_EXCL, dbpath)) == -1)
+ goto exit_failure;
}
/*
if ((dbd = dbif_init(dbpath, "cnid2.db")) == NULL)
goto exit_failure;
- if (dbif_env_open(dbd, &db_param, exclusive ? (DBOPTIONS | DB_RECOVER) : DBOPTIONS) < 0) {
+ if (dbif_env_open(dbd,
+ &db_param,
+ (db_locked == LOCK_EXCL) ? (DBOPTIONS | DB_RECOVER) : DBOPTIONS) < 0) {
dbd_log( LOGSTD, "error opening database!");
goto exit_failure;
}
- if (exclusive)
+ if (db_locked == LOCK_EXCL)
dbd_log( LOGDEBUG, "Finished recovery.");
if (dbif_open(dbd, NULL, rebuildindexes) < 0) {
dbif_close(dbd);
goto exit_failure;
}
+ }
- if (dbd_stamp(dbd) < 0) {
- dbif_close(dbd);
+ /* Downgrade db lock if not running exclusive */
+ if (!exclusive && (db_locked == LOCK_EXCL)) {
+ if (get_lock(LOCK_UNLOCK, NULL) != 0)
+ goto exit_failure;
+ if (get_lock(LOCK_SHRD, NULL) != LOCK_SHRD)
goto exit_failure;
- }
}
/* Now execute given command scan|rebuild|dump */
}
/* Cleanup */
- if (! nocniddb && dbif_close(dbd) < 0) {
- dbd_log( LOGSTD, "Error closing database");
- goto exit_failure;
+ dbd_log(LOGDEBUG, "Closing db");
+ if (! nocniddb) {
+ if (dbif_close(dbd) < 0) {
+ dbd_log( LOGSTD, "Error closing database");
+ goto exit_failure;
+ }
}
exit_success:
ret = 0;
exit_failure:
- free_lock(lockfd);
+ get_lock(0, NULL);
if ((fchdir(cdir)) < 0)
dbd_log(LOGSTD, "fchdir: %s", strerror(errno));
projects / netatalk.git / blobdiff