2 * FreeBSD install - a package for the installation and maintainance
3 * of non-core utilities.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
17 * This is the package extraction code for the add module.
21 #include <sys/cdefs.h>
22 __FBSDID("$FreeBSD: src/usr.sbin/pkg_install/add/extract.c,v 1.25.2.6 2002/08/31 18:45:32 obrien Exp $");
29 #define STARTSTRING "tar cf - "
30 #define TOOBIG(str) (((int)strlen(str) + FILENAME_MAX + where_count > maxargs) \
31 || ((int)strlen(str) + FILENAME_MAX + perm_count > maxargs))
33 #define PUSHOUT(todir) /* push out string */ \
34 if (where_count > (int)sizeof(STARTSTRING)-1) { \
35 strcat(where_args, "|tar --unlink -xpf - -C "); \
36 strcat(where_args, todir); \
37 if (system(where_args)) { \
40 "%s: can not invoke %ld byte tar pipeline: %s", \
42 (long)strlen(where_args), where_args); \
44 strcpy(where_args, STARTSTRING); \
45 where_count = sizeof(STARTSTRING)-1; \
48 apply_perms(todir, perm_args); \
54 rollback(const char *name, const char *home, PackingList start, PackingList stop)
57 char try[FILENAME_MAX], bup[FILENAME_MAX];
61 for (q = start; q != stop; q = q->next) {
62 if (q->type == PLIST_FILE) {
63 snprintf(try, FILENAME_MAX, "%s/%s", dir, q->name);
64 if (make_preserve_name(bup, FILENAME_MAX, name, try) && fexists(bup)) {
65 (void)chflags(try, 0);
68 warnx("rollback: unable to rename %s back to %s", bup, try);
71 else if (q->type == PLIST_CWD) {
72 if (strcmp(q->name, "."))
81 extract_plist(const char *home, Package *pkg)
83 PackingList p = pkg->head;
85 char *where_args, *perm_args, *last_chdir;
86 int maxargs, where_count = 0, perm_count = 0, add_count;
89 maxargs = sysconf(_SC_ARG_MAX) / 2; /* Just use half the argument space */
90 where_args = alloca(maxargs);
93 errx(2, "%s: can't get argument list space", __func__);
95 perm_args = alloca(maxargs);
98 errx(2, "%s: can't get argument list space", __func__);
101 strcpy(where_args, STARTSTRING);
102 where_count = sizeof(STARTSTRING)-1;
106 preserve = find_plist_option(pkg, "preserve") ? TRUE : FALSE;
108 /* Reset the world */
113 (const char *)Directory = home;
117 char cmd[FILENAME_MAX];
123 printf("extract: Package name is %s\n", p->name);
129 printf("extract: %s/%s\n", Directory, p->name);
131 char try[FILENAME_MAX];
133 if (strrchr(p->name,'\'')) {
135 errx(2, "%s: Bogus filename \"%s\"", __func__, p->name);
138 /* first try to rename it into place */
139 snprintf(try, FILENAME_MAX, "%s/%s", Directory, p->name);
141 (void)chflags(try, 0); /* XXX hack - if truly immutable, rename fails */
142 if (preserve && PkgName) {
143 char pf[FILENAME_MAX];
145 if (make_preserve_name(pf, FILENAME_MAX, PkgName, try)) {
146 if (rename(try, pf)) {
148 "unable to back up %s to %s, aborting pkg_add",
150 rollback(PkgName, home, pkg->head, p);
156 if (rename(p->name, try) == 0) {
157 /* try to add to list of perms to be changed and run in bulk. */
158 if (p->name[0] == '/' || TOOBIG(p->name)) {
161 add_count = snprintf(&perm_args[perm_count], maxargs - perm_count, "'%s' ", p->name);
162 if (add_count < 0 || add_count > maxargs - perm_count) {
164 errx(2, "%s: oops, miscounted strings!", __func__);
166 perm_count += add_count;
169 /* rename failed, try copying with a big tar command */
170 if (last_chdir != Directory) {
171 if (last_chdir == NULL) {
176 last_chdir = Directory;
178 else if (p->name[0] == '/' || TOOBIG(p->name)) {
181 add_count = snprintf(&where_args[where_count], maxargs - where_count, " '%s'", p->name);
182 if (add_count < 0 || add_count > maxargs - where_count) {
184 errx(2, "%s: oops, miscounted strings!", __func__);
186 where_count += add_count;
187 add_count = snprintf(&perm_args[perm_count],
188 maxargs - perm_count,
190 if (add_count < 0 || add_count > maxargs - perm_count) {
192 errx(2, "%s: oops, miscounted strings!", __func__);
194 perm_count += add_count;
201 printf("extract: CWD to %s\n", p->name);
203 if (strcmp(p->name, ".")) {
204 if (!Fake && make_hierarchy(p->name) == FAIL) {
206 errx(2, "%s: unable to cwd to '%s'", __func__, p->name);
211 (const char *)Directory = home;
215 if ((strstr(p->name, "%B") || strstr(p->name, "%F") ||
216 strstr(p->name, "%f")) && last_file == NULL) {
218 errx(2, "%s: no last file specified for '%s' command",
221 if (strstr(p->name, "%D") && Directory == NULL) {
223 errx(2, "%s: no directory specified for '%s' command",
226 format_cmd(cmd, p->name, Directory, last_file);
229 printf("extract: execute '%s'\n", cmd);
230 if (!Fake && system(cmd))
231 warnx("command '%s' failed", cmd);