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.
19 * $FreeBSD: src/usr.sbin/pkg_install/add/extract.c,v 1.42 2004/07/28 07:19:15 kan Exp $
20 * $DragonFly: src/usr.sbin/pkg_install/add/Attic/extract.c,v 1.4 2004/12/18 22:48:04 swildner Exp $
29 #define STARTSTRING "/usr/bin/tar cf -"
31 (((int)strlen(str) + FILENAME_MAX + where_count > maxargs) ||\
32 ((int)strlen(str) + FILENAME_MAX + perm_count > maxargs))
34 #define PUSHOUT(todir) /* push out string */ \
35 if (where_count > (int)sizeof(STARTSTRING)-1) { \
36 strcat(where_args, "|/usr/bin/tar --unlink -xpf - -C "); \
37 strcat(where_args, todir); \
38 if (system(where_args)) { \
40 errx(2, "%s: can not invoke %ld byte tar pipeline: %s", \
41 __func__, (long)strlen(where_args), where_args); \
43 strcpy(where_args, STARTSTRING); \
44 where_count = sizeof(STARTSTRING)-1; \
47 apply_perms(todir, perm_args); \
53 rollback(const char *name, const char *home, PackingList start, PackingList stop)
56 char try[FILENAME_MAX], bup[FILENAME_MAX];
60 for (q = start; q != stop; q = q->next) {
61 if (q->type == PLIST_FILE) {
62 snprintf(try, FILENAME_MAX, "%s/%s", dir, q->name);
63 if (make_preserve_name(bup, FILENAME_MAX, name, try) && fexists(bup)) {
67 warnx("rollback: unable to rename %s back to %s", bup, try);
70 else if (q->type == PLIST_CWD) {
71 if (strcmp(q->name, "."))
79 #define add_char(buf, len, pos, ch) do {\
80 if ((pos) < (len)) { \
82 buf[(pos) + 1] = '\0'; \
88 add_arg(char *buf, int len, const char *str)
92 add_char(buf, len, i, ' ');
93 for (; *str != '\0'; ++str) {
94 if (!isalnum(*str) && *str != '/' && *str != '.' && *str != '-')
95 add_char(buf, len, i, '\\');
96 add_char(buf, len, i, *str);
102 extract_plist(const char *home, Package *pkg)
104 PackingList p = pkg->head;
106 char *where_args, *perm_args, *last_chdir;
107 int maxargs, where_count = 0, perm_count = 0, add_count;
110 maxargs = sysconf(_SC_ARG_MAX) / 2; /* Just use half the argument space */
111 where_args = alloca(maxargs);
114 errx(2, "%s: can't get argument list space", __func__);
116 perm_args = alloca(maxargs);
119 errx(2, "%s: can't get argument list space", __func__);
122 strcpy(where_args, STARTSTRING);
123 where_count = sizeof(STARTSTRING)-1;
127 preserve = find_plist_option(pkg, "preserve") ? TRUE : FALSE;
129 /* Reset the world */
134 Directory = (char *)home;
138 char cmd[FILENAME_MAX];
144 printf("extract: Package name is %s\n", p->name);
150 printf("extract: %s/%s\n", Directory, p->name);
152 char try[FILENAME_MAX];
154 /* first try to rename it into place */
155 snprintf(try, FILENAME_MAX, "%s/%s", Directory, p->name);
157 chflags(try, 0); /* XXX hack - if truly immutable, rename fails */
158 if (preserve && PkgName) {
159 char pf[FILENAME_MAX];
161 if (make_preserve_name(pf, FILENAME_MAX, PkgName, try)) {
162 if (rename(try, pf)) {
164 "unable to back up %s to %s, aborting pkg_add",
166 rollback(PkgName, home, pkg->head, p);
172 if (rename(p->name, try) == 0) {
173 /* try to add to list of perms to be changed and run in bulk. */
174 if (p->name[0] == '/' || TOOBIG(p->name)) {
177 add_count = add_arg(&perm_args[perm_count], maxargs - perm_count, p->name);
178 if (add_count < 0 || add_count >= maxargs - perm_count) {
180 errx(2, "%s: oops, miscounted strings!", __func__);
182 perm_count += add_count;
185 /* rename failed, try copying with a big tar command */
186 if (last_chdir != Directory) {
187 if (last_chdir == NULL) {
192 last_chdir = Directory;
194 else if (p->name[0] == '/' || TOOBIG(p->name)) {
197 add_count = add_arg(&where_args[where_count], maxargs - where_count, p->name);
198 if (add_count < 0 || add_count >= maxargs - where_count) {
200 errx(2, "%s: oops, miscounted strings!", __func__);
202 where_count += add_count;
203 add_count = add_arg(&perm_args[perm_count], maxargs - perm_count, p->name);
204 if (add_count < 0 || add_count >= maxargs - perm_count) {
206 errx(2, "%s: oops, miscounted strings!", __func__);
208 perm_count += add_count;
215 printf("extract: CWD to %s\n", p->name);
217 if (strcmp(p->name, ".")) {
218 if (!Fake && make_hierarchy(p->name) == FAIL) {
220 errx(2, "%s: unable to cwd to '%s'", __func__, p->name);
225 Directory = (char *)home;
229 if ((strstr(p->name, "%B") || strstr(p->name, "%F") ||
230 strstr(p->name, "%f")) && last_file == NULL) {
232 errx(2, "%s: no last file specified for '%s' command",
235 if (strstr(p->name, "%D") && Directory == NULL) {
237 errx(2, "%s: no directory specified for '%s' command",
240 format_cmd(cmd, FILENAME_MAX, p->name, Directory, last_file);
243 printf("extract: execute '%s'\n", cmd);
244 if (!Fake && system(cmd))
245 warnx("command '%s' failed", cmd);