xbps/lib/package_register.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

150 lines
4.4 KiB
C

/*-
* Copyright (c) 2008-2014 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 <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include "xbps_api_impl.h"
int HIDDEN
xbps_register_pkg(struct xbps_handle *xhp, xbps_dictionary_t pkgrd)
{
xbps_dictionary_t pkgd;
xbps_array_t provides, rundeps;
char outstr[64];
time_t t;
struct tm *tmp;
const char *desc, *pkgver;
char *pkgname = NULL, *buf, *sha256;
int rv = 0;
bool autoinst = false;
assert(xbps_object_type(pkgrd) == XBPS_TYPE_DICTIONARY);
xbps_dictionary_get_cstring_nocopy(pkgrd, "pkgver", &pkgver);
xbps_dictionary_get_cstring_nocopy(pkgrd, "short_desc", &desc);
xbps_dictionary_get_bool(pkgrd, "automatic-install", &autoinst);
provides = xbps_dictionary_get(pkgrd, "provides");
rundeps = xbps_dictionary_get(pkgrd, "run_depends");
assert(pkgver != NULL);
assert(desc != NULL);
pkgd = xbps_pkgdb_get_pkg(xhp, pkgver);
if (pkgd == NULL) {
rv = ENOENT;
goto out;
}
if (!xbps_dictionary_set_cstring_nocopy(pkgd,
"pkgver", pkgver)) {
xbps_dbg_printf(xhp, "%s: invalid pkgver for %s\n",
__func__, pkgver);
rv = EINVAL;
goto out;
}
if (!xbps_dictionary_set_cstring_nocopy(pkgd,
"short_desc", desc)) {
xbps_dbg_printf(xhp, "%s: invalid short_desc for %s\n",
__func__, pkgver);
rv = EINVAL;
goto out;
}
if (xhp->flags & XBPS_FLAG_INSTALL_AUTO)
autoinst = true;
if (!xbps_dictionary_set_bool(pkgd,
"automatic-install", autoinst)) {
xbps_dbg_printf(xhp, "%s: invalid autoinst for %s\n",
__func__, pkgver);
rv = EINVAL;
goto out;
}
/*
* Set the "install-date" object to know the pkg installation date.
*/
t = time(NULL);
if ((tmp = localtime(&t)) == NULL) {
xbps_dbg_printf(xhp, "%s: localtime failed: %s\n",
pkgver, strerror(errno));
rv = EINVAL;
goto out;
}
if (strftime(outstr, sizeof(outstr)-1, "%F %R %Z", tmp) == 0) {
xbps_dbg_printf(xhp, "%s: strftime failed: %s\n",
pkgver, strerror(errno));
rv = EINVAL;
goto out;
}
if (!xbps_dictionary_set_cstring(pkgd, "install-date", outstr)) {
xbps_dbg_printf(xhp, "%s: install-date set failed!\n", pkgver);
rv = EINVAL;
goto out;
}
if (provides && !xbps_dictionary_set(pkgd, "provides", provides)) {
xbps_dbg_printf(xhp, "%s: failed to set provides for %s\n",
__func__, pkgver);
rv = EINVAL;
goto out;
}
if (rundeps && !xbps_dictionary_set(pkgd, "run_depends", rundeps)) {
xbps_dbg_printf(xhp, "%s: failed to set rundeps for %s\n",
__func__, pkgver);
rv = EINVAL;
goto out;
}
/*
* Create a hash for the pkg's metafile.
*/
pkgname = xbps_pkg_name(pkgver);
assert(pkgname);
buf = xbps_xasprintf("%s/.%s.plist", xhp->metadir, pkgname);
sha256 = xbps_file_hash(buf);
assert(sha256);
xbps_dictionary_set_cstring(pkgd, "metafile-sha256", sha256);
free(sha256);
free(buf);
/*
* Remove unneeded objs from pkg dictionary.
*/
xbps_dictionary_remove(pkgd, "remove-and-update");
xbps_dictionary_remove(pkgd, "transaction");
xbps_dictionary_remove(pkgd, "skip-obsoletes");
if (!xbps_dictionary_set(xhp->pkgdb, pkgname, pkgd)) {
xbps_dbg_printf(xhp,
"%s: failed to set pkgd for %s\n", __func__, pkgver);
}
out:
if (pkgname)
free(pkgname);
return rv;
}