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@@ -0,0 +1,188 @@
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+/*
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+ * dpkg - main program for package management
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+ * statdb.c - management of database of ownership and mode of files
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+ *
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+ * Copyright © 1995 Ian Jackson <ian@chiark.greenend.org.uk>
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+ * Copyright © 2000, 2001 Wichert Akkerman <wakkerma@debian.org>
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+ *
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+ * This is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as
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+ * published by the Free Software Foundation; either version 2,
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+ * or (at your option) any later version.
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+ *
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+ * This is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public
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+ * License along with dpkg; if not, write to the Free Software
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+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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+ */
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+
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+#include <config.h>
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+#include <compat.h>
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+
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+#include <dpkg-i18n.h>
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+
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+#include <assert.h>
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+#include <stdlib.h>
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+#include <unistd.h>
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+#include <fcntl.h>
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+#include <string.h>
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+#include <errno.h>
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+#include <sys/stat.h>
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+
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+#include <pwd.h>
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+#include <grp.h>
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+#include <sys/types.h>
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+
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+#include <dpkg.h>
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+#include <dpkg-db.h>
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+#include <dpkg-priv.h>
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+
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+#include "filesdb.h"
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+#include "main.h"
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+
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+static FILE *statoverridefile = NULL;
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+
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+void
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+ensure_statoverrides(void)
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+{
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+ static struct varbuf vb;
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+
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+ struct stat stab1, stab2;
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+ FILE *file;
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+ char *loaded_list, *loaded_list_end, *thisline, *nextline, *ptr;
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+ struct filestatoverride *fso;
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+ struct filenamenode *fnn;
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+
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+ varbufreset(&vb);
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+ varbufaddstr(&vb, admindir);
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+ varbufaddstr(&vb, "/" STATOVERRIDEFILE);
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+ varbufaddc(&vb, 0);
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+
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+ onerr_abort++;
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+
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+ file = fopen(vb.buf,"r");
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+ if (!file) {
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+ if (errno != ENOENT)
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+ ohshite(_("failed to open statoverride file"));
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+ if (!statoverridefile) {
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+ onerr_abort--;
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+ return;
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+ }
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+ } else {
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+ if (fstat(fileno(file), &stab2))
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+ ohshite(_("failed to fstat statoverride file"));
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+ if (statoverridefile) {
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+ if (fstat(fileno(statoverridefile), &stab1))
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+ ohshite(_("failed to fstat previous statoverride file"));
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+ if (stab1.st_dev == stab2.st_dev &&
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+ stab1.st_ino == stab2.st_ino) {
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+ fclose(file);
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+ onerr_abort--;
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+ return;
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+ }
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+ }
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+ }
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+ if (statoverridefile)
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+ fclose(statoverridefile);
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+ statoverridefile = file;
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+ setcloexec(fileno(statoverridefile), vb.buf);
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+
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+ /* If the statoverride list is empty we don't need to bother
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+ * reading it. */
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+ if (!stab2.st_size) {
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+ onerr_abort--;
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+ return;
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+ }
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+
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+ loaded_list = nfmalloc(stab2.st_size);
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+ loaded_list_end = loaded_list + stab2.st_size;
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+
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+ fd_buf_copy(fileno(file), loaded_list, stab2.st_size,
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+ _("statoverride file `%.250s'"), vb.buf);
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+
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+ thisline = loaded_list;
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+ while (thisline < loaded_list_end) {
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+ char* endptr;
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+
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+ fso = nfmalloc(sizeof(struct filestatoverride));
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+
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+ if (!(ptr = memchr(thisline, '\n', loaded_list_end - thisline)))
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+ ohshit(_("statoverride file is missing final newline"));
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+ /* Where to start next time around. */
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+ nextline = ptr + 1;
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+ if (ptr == thisline)
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+ ohshit(_("statoverride file contains empty line"));
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+ *ptr = 0;
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+
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+ /* Extract the uid. */
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+ if (!(ptr = memchr(thisline, ' ', nextline - thisline)))
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+ ohshit(_("syntax error in statoverride file"));
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+ *ptr = 0;
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+ if (thisline[0] == '#') {
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+ fso->uid = strtol(thisline + 1, &endptr, 10);
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+ if (thisline + 1 == endptr || *endptr)
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+ ohshit(_("syntax error: invalid uid in statoverride file"));
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+ } else {
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+ struct passwd* pw = getpwnam(thisline);
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+ if (pw == NULL)
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+ ohshit(_("syntax error: unknown user '%s' in statoverride file"),
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+ thisline);
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+ fso->uid = pw->pw_uid;
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+ }
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+
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+ /* Move to the next bit */
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+ thisline = ptr + 1;
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+ if (thisline >= loaded_list_end)
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+ ohshit(_("unexpected end of line in statoverride file"));
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+
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+ /* Extract the gid */
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+ if (!(ptr = memchr(thisline, ' ', nextline - thisline)))
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+ ohshit(_("syntax error in statoverride file"));
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+ *ptr = 0;
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+ if (thisline[0] == '#') {
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+ fso->gid = strtol(thisline + 1, &endptr, 10);
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+ if (thisline + 1 == endptr || *endptr)
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+ ohshit(_("syntax error: invalid gid in statoverride file"));
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+ } else {
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+ struct group* gr = getgrnam(thisline);
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+ if (gr == NULL)
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+ ohshit(_("syntax error: unknown group '%s' in statoverride file"),
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+ thisline);
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+ fso->gid = gr->gr_gid;
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+ }
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+
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+ /* Move to the next bit */
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+ thisline = ptr + 1;
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+ if (thisline >= loaded_list_end)
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+ ohshit(_("unexpected end of line in statoverride file"));
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+
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+ /* Extract the mode */
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+ if (!(ptr = memchr(thisline, ' ', nextline - thisline)))
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+ ohshit(_("syntax error in statoverride file"));
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+ *ptr = 0;
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+ fso->mode = strtol(thisline, &endptr, 8);
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+ if (thisline == endptr || *endptr)
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+ ohshit(_("syntax error: invalid mode in statoverride file"));
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+
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+ /* Move to the next bit */
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+ thisline = ptr + 1;
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+ if (thisline >= loaded_list_end)
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+ ohshit(_("unexecpted end of line in statoverride file"));
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+
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+ fnn = findnamenode(thisline, 0);
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+ if (fnn->statoverride)
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+ ohshit(_("multiple statusoverides present for file '%.250s'"),
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+ thisline);
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+ fnn->statoverride = fso;
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+
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+ /* Moving on.. */
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+ thisline = nextline;
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+ }
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+
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+ onerr_abort--;
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+}
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+
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Guillem Jover