xbps/bin/xbps-pkgdb/main.c
Juan RP 0416b067d0 Use a POSIX lock for pkgdb and only issue pkgdb writes in exact points.
- Rather than using a POSIX named semaphore use a POSIX lock (lockf(3))
for pkgdb for writers. Writers that cannot acquire the pkgdb lock will
get EAGAIN rather then being blocked.

- Due to using a file lock we cannot write the pkgdb every time a package
is being unpacked, configured or removed. Instead pkgdb is only written
at the end of a specific point in the transaction (unpack, configure, remove)
or via xbps_pkgdb_unlock().
2014-03-04 14:37:10 +01:00

186 lines
5.4 KiB
C

/*-
* Copyright (c) 2013-2014 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <errno.h>
#include <xbps.h>
#include "defs.h"
static void __attribute__((noreturn))
usage(bool fail)
{
fprintf(stdout,
"Usage: xbps-pkgdb [OPTIONS] [PKGNAME...]\n\n"
"OPTIONS\n"
" -a --all Process all packages\n"
" -C --config <file> Full path to configuration file\n"
" -d --debug Debug mode shown to stderr\n"
" -h --help Print usage help\n"
" -m --mode <auto|manual|hold|unhold> Change PKGNAME to this mode\n"
" -r --rootdir <dir> Full path to rootdir\n"
" -u --update Update pkgdb to the latest format\n"
" -v --verbose Verbose messages\n"
" -V --version Show XBPS version\n");
exit(fail ? EXIT_FAILURE : EXIT_SUCCESS);
}
static int
change_pkg_mode(struct xbps_handle *xhp, const char *pkgname, const char *mode)
{
xbps_dictionary_t pkgd;
pkgd = xbps_pkgdb_get_pkg(xhp, pkgname);
if (pkgd == NULL)
return errno;
if (strcmp(mode, "auto") == 0)
xbps_dictionary_set_bool(pkgd, "automatic-install", true);
else if (strcmp(mode, "manual") == 0)
xbps_dictionary_set_bool(pkgd, "automatic-install", false);
else if (strcmp(mode, "hold") == 0)
xbps_dictionary_set_bool(pkgd, "hold", true);
else if (strcmp(mode, "unhold") == 0)
xbps_dictionary_remove(pkgd, "hold");
else
usage(true);
return 0;
}
int
main(int argc, char **argv)
{
const char *shortopts = "aC:dhm:r:uVv";
const struct option longopts[] = {
{ "all", no_argument, NULL, 'a' },
{ "config", required_argument, NULL, 'C' },
{ "debug", no_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "mode", required_argument, NULL, 'm' },
{ "rootdir", required_argument, NULL, 'r' },
{ "update", no_argument, NULL, 'u' },
{ "verbose", no_argument, NULL, 'v' },
{ "version", no_argument, NULL, 'V' },
{ NULL, 0, NULL, 0 }
};
struct xbps_handle xh;
const char *conffile = NULL, *rootdir = NULL, *instmode = NULL;
int c, i, rv, flags = 0;
bool update_format = false, all = false;
while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) {
switch (c) {
case 'a':
all = true;
break;
case 'C':
conffile = optarg;
break;
case 'd':
flags |= XBPS_FLAG_DEBUG;
break;
case 'h':
usage(false);
/* NOTREACHED */
case 'm':
instmode = optarg;
break;
case 'r':
rootdir = optarg;
break;
case 'u':
update_format = true;
break;
case 'v':
flags |= XBPS_FLAG_VERBOSE;
break;
case 'V':
printf("%s\n", XBPS_RELVER);
exit(EXIT_SUCCESS);
case '?':
default:
usage(true);
/* NOTREACHED */
}
}
if (!update_format && !all && (argc == optind))
usage(true);
memset(&xh, 0, sizeof(xh));
if (rootdir)
strncpy(xh.rootdir, rootdir, sizeof(xh.rootdir));
xh.conffile = conffile;
xh.flags = flags;
if ((rv = xbps_init(&xh)) != 0) {
xbps_error_printf("Failed to initialize libxbps: %s\n",
strerror(rv));
exit(EXIT_FAILURE);
}
if ((rv = xbps_pkgdb_lock(&xh)) != 0) {
fprintf(stderr, "failed to lock pkgdb: %s\n", strerror(rv));
exit(EXIT_FAILURE);
}
if (update_format)
convert_pkgdb_format(&xh);
else if (instmode) {
if (argc == optind) {
fprintf(stderr,
"xbps-pkgdb: missing PKGNAME argument\n");
xbps_pkgdb_unlock(&xh);
exit(EXIT_FAILURE);
}
for (i = optind; i < argc; i++) {
rv = change_pkg_mode(&xh, argv[i], instmode);
if (rv != 0) {
fprintf(stderr, "xbps-pkgdb: failed to "
"change to %s mode to %s: %s\n",
instmode, argv[i], strerror(rv));
xbps_pkgdb_unlock(&xh);
exit(EXIT_FAILURE);
}
}
} else if (all) {
rv = check_pkg_integrity_all(&xh);
} else {
for (i = optind; i < argc; i++) {
rv = check_pkg_integrity(&xh, NULL, argv[i]);
if (rv != 0)
fprintf(stderr, "Failed to check "
"`%s': %s\n", argv[i], strerror(rv));
}
}
xbps_pkgdb_unlock(&xh);
exit(rv ? EXIT_FAILURE : EXIT_SUCCESS);
}