Annotation of src/usr.bin/xinstall/xinstall.c, Revision 1.3
1.3 ! deraadt 1: /* $OpenBSD: xinstall.c,v 1.9 1995/12/20 10:25:17 jonathan Exp $ */
1.2 deraadt 2: /* $NetBSD: xinstall.c,v 1.9 1995/12/20 10:25:17 jonathan Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1987, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1987, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)xinstall.c 8.1 (Berkeley) 7/21/93";
46: #endif
1.3 ! deraadt 47: static char rcsid[] = "$OpenBSD: xinstall.c,v 1.9 1995/12/20 10:25:17 jonathan Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: #include <sys/param.h>
51: #include <sys/wait.h>
52: #include <sys/mman.h>
53: #include <sys/stat.h>
54:
55: #include <ctype.h>
56: #include <errno.h>
57: #include <fcntl.h>
58: #include <grp.h>
59: #include <paths.h>
60: #include <pwd.h>
61: #include <stdio.h>
62: #include <stdlib.h>
63: #include <string.h>
64: #include <unistd.h>
65: #include <err.h>
66:
67: #include "pathnames.h"
68:
69: struct passwd *pp;
70: struct group *gp;
71: int docopy, dodir, dostrip;
72: int mode = S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH;
73: char pathbuf[MAXPATHLEN];
74: uid_t uid;
75: gid_t gid;
76:
77: #define DIRECTORY 0x01 /* Tell install it's a directory. */
78: #define SETFLAGS 0x02 /* Tell install to set flags. */
79:
80: void copy __P((int, char *, int, char *, off_t));
81: void install __P((char *, char *, u_long, u_int));
82: void install_dir __P((char *));
83: u_long string_to_flags __P((char **, u_long *, u_long *));
84: void strip __P((char *));
85: void usage __P((void));
86:
87: int
88: main(argc, argv)
89: int argc;
90: char *argv[];
91: {
92: struct stat from_sb, to_sb;
93: mode_t *set;
94: u_long fset;
95: u_int iflags;
96: int ch, no_target;
97: char *flags, *to_name, *group = NULL, *owner = NULL;
98:
99: iflags = 0;
100: while ((ch = getopt(argc, argv, "cf:g:m:o:sd")) != EOF)
101: switch((char)ch) {
102: case 'c':
103: docopy = 1;
104: break;
105: case 'f':
106: flags = optarg;
107: if (string_to_flags(&flags, &fset, NULL))
108: errx(1, "%s: invalid flag", flags);
109: iflags |= SETFLAGS;
110: break;
111: case 'g':
112: group = optarg;
113: break;
114: case 'm':
115: if (!(set = setmode(optarg)))
116: errx(1, "%s: invalid file mode", optarg);
117: mode = getmode(set, 0);
118: break;
119: case 'o':
120: owner = optarg;
121: break;
122: case 's':
123: dostrip = 1;
124: break;
125: case 'd':
126: dodir = 1;
127: break;
128: case '?':
129: default:
130: usage();
131: }
132: argc -= optind;
133: argv += optind;
134:
135: /* copy and strip options make no sense when creating directories */
136: if ((docopy || dostrip) && dodir)
137: usage();
138:
139: /* must have at least two arguments, except when creating directories */
140: if (argc < 2 && !dodir)
141: usage();
142:
143: /* get group and owner id's */
144: if (group && !(gp = getgrnam(group)) && !isdigit(*group))
145: errx(1, "unknown group %s", group);
146: gid = (group) ? ((gp) ? gp->gr_gid : atoi(group)) : -1;
147: if (owner && !(pp = getpwnam(owner)) && !isdigit(*owner))
148: errx(1, "unknown user %s", owner);
149: uid = (owner) ? ((pp) ? pp->pw_uid : atoi(owner)) : -1;
150:
151: if (dodir) {
152: for (; *argv != NULL; ++argv)
153: install_dir(*argv);
154: exit (0);
155: /* NOTREACHED */
156: }
157:
158: no_target = stat(to_name = argv[argc - 1], &to_sb);
159: if (!no_target && S_ISDIR(to_sb.st_mode)) {
160: for (; *argv != to_name; ++argv)
161: install(*argv, to_name, fset, iflags | DIRECTORY);
162: exit(0);
163: }
164:
165: /* can't do file1 file2 directory/file */
166: if (argc != 2)
167: usage();
168:
169: if (!no_target) {
170: if (stat(*argv, &from_sb))
171: err(1, "%s", *argv);
172: if (!S_ISREG(to_sb.st_mode))
173: errx(1, "%s: %s", to_name, strerror(EFTYPE));
174: if (to_sb.st_dev == from_sb.st_dev &&
175: to_sb.st_ino == from_sb.st_ino)
176: errx(1, "%s and %s are the same file", *argv, to_name);
177: /*
178: * Unlink now... avoid ETXTBSY errors later. Try and turn
179: * off the append/immutable bits -- if we fail, go ahead,
180: * it might work.
181: */
182: #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND)
183: if (to_sb.st_flags & NOCHANGEBITS)
184: (void)chflags(to_name,
185: to_sb.st_flags & ~(NOCHANGEBITS));
186: (void)unlink(to_name);
187: }
188: install(*argv, to_name, fset, iflags);
189: exit(0);
190: }
191:
192: /*
193: * install --
194: * build a path name and install the file
195: */
196: void
197: install(from_name, to_name, fset, flags)
198: char *from_name, *to_name;
199: u_long fset;
200: u_int flags;
201: {
202: struct stat from_sb, to_sb;
203: int devnull, from_fd, to_fd, serrno;
204: char *p;
205:
206: /* If try to install NULL file to a directory, fails. */
207: if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) {
208: if (stat(from_name, &from_sb))
209: err(1, "%s", from_name);
210: if (!S_ISREG(from_sb.st_mode))
211: errx(1, "%s: %s", from_name, strerror(EFTYPE));
212: /* Build the target path. */
213: if (flags & DIRECTORY) {
214: (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s",
215: to_name,
216: (p = rindex(from_name, '/')) ? ++p : from_name);
217: to_name = pathbuf;
218: }
219: devnull = 0;
220: } else {
221: from_sb.st_flags = 0; /* XXX */
222: devnull = 1;
223: }
224:
225: /*
226: * Unlink now... avoid ETXTBSY errors later. Try and turn
227: * off the append/immutable bits -- if we fail, go ahead,
228: * it might work.
229: */
230: if (stat(to_name, &to_sb) == 0 &&
231: to_sb.st_flags & (NOCHANGEBITS))
232: (void)chflags(to_name, to_sb.st_flags & ~(NOCHANGEBITS));
233: (void)unlink(to_name);
234:
235: /* Create target. */
236: if ((to_fd = open(to_name,
237: O_CREAT | O_WRONLY | O_TRUNC, S_IRUSR | S_IWUSR)) < 0)
238: err(1, "%s", to_name);
239: if (!devnull) {
240: if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) {
241: (void)unlink(to_name);
242: err(1, "%s", from_name);
243: }
244: copy(from_fd, from_name, to_fd, to_name, from_sb.st_size);
245: (void)close(from_fd);
246: }
1.2 deraadt 247:
248: if (dostrip) {
1.1 deraadt 249: strip(to_name);
1.2 deraadt 250:
251: /*
252: * Re-open our fd on the target, in case we used a strip
253: * that does not work in-place -- like gnu binutils strip.
254: */
255: close(to_fd);
256: if ((to_fd = open(to_name, O_RDONLY, S_IRUSR | S_IWUSR)) < 0)
257: err(1, "stripping %s", to_name);
258: }
259:
1.1 deraadt 260: /*
261: * Set owner, group, mode for target; do the chown first,
262: * chown may lose the setuid bits.
263: */
264: if ((gid != -1 || uid != -1) && fchown(to_fd, uid, gid)) {
265: serrno = errno;
266: (void)unlink(to_name);
267: errx(1, "%s: chown/chgrp: %s", to_name, strerror(serrno));
268: }
269: if (fchmod(to_fd, mode)) {
270: serrno = errno;
271: (void)unlink(to_name);
272: errx(1, "%s: chmod: %s", to_name, strerror(serrno));
273: }
274:
275: /*
276: * If provided a set of flags, set them, otherwise, preserve the
277: * flags, except for the dump flag.
278: */
279: if (fchflags(to_fd,
280: flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) {
281: serrno = errno;
282: (void)unlink(to_name);
283: errx(1, "%s: chflags: %s", to_name, strerror(serrno));
284: }
285:
286: (void)close(to_fd);
287: if (!docopy && !devnull && unlink(from_name))
288: err(1, "%s", from_name);
289: }
290:
291: /*
292: * copy --
293: * copy from one file to another
294: */
295: void
296: copy(from_fd, from_name, to_fd, to_name, size)
297: register int from_fd, to_fd;
298: char *from_name, *to_name;
299: off_t size;
300: {
301: register int nr, nw;
302: int serrno;
303: char *p, buf[MAXBSIZE];
1.3 ! deraadt 304: volatile size_t siz;
1.1 deraadt 305:
306: /*
307: * Mmap and write if less than 8M (the limit is so we don't totally
308: * trash memory on big files. This is really a minor hack, but it
309: * wins some CPU back.
310: */
311: if (size <= 8 * 1048576) {
312: if ((p = mmap(NULL, (size_t)size, PROT_READ,
313: 0, from_fd, (off_t)0)) == (char *)-1)
314: err(1, "%s", from_name);
1.3 ! deraadt 315: siz = (size_t)size;
! 316: if (write(to_fd, p, siz) != siz)
1.1 deraadt 317: err(1, "%s", to_name);
318: } else {
319: while ((nr = read(from_fd, buf, sizeof(buf))) > 0)
320: if ((nw = write(to_fd, buf, nr)) != nr) {
321: serrno = errno;
322: (void)unlink(to_name);
323: errx(1, "%s: %s",
324: to_name, strerror(nw > 0 ? EIO : serrno));
325: }
326: if (nr != 0) {
327: serrno = errno;
328: (void)unlink(to_name);
329: errx(1, "%s: %s", from_name, strerror(serrno));
330: }
331: }
332: }
333:
334: /*
335: * strip --
336: * use strip(1) to strip the target file
337: */
338: void
339: strip(to_name)
340: char *to_name;
341: {
342: int serrno, status;
343:
344: switch (vfork()) {
345: case -1:
346: serrno = errno;
347: (void)unlink(to_name);
348: errx(1, "forks: %s", strerror(errno));
349: case 0:
350: execl(_PATH_STRIP, "strip", to_name, NULL);
351: err(1, "%s", _PATH_STRIP);
352: default:
353: if (wait(&status) == -1 || status)
354: (void)unlink(to_name);
355: }
356: }
357:
358: /*
359: * install_dir --
360: * build directory heirarchy
361: */
362: void
363: install_dir(path)
364: char *path;
365: {
366: register char *p;
367: struct stat sb;
368: int ch;
369:
370: for (p = path;; ++p)
371: if (!*p || (p != path && *p == '/')) {
372: ch = *p;
373: *p = '\0';
374: if (stat(path, &sb)) {
375: if (errno != ENOENT || mkdir(path, 0777) < 0) {
376: err(1, "%s", path);
377: /* NOTREACHED */
378: }
379: }
380: if (!(*p = ch))
381: break;
382: }
383:
384: if (((gid != -1 || uid != -1) && chown(path, uid, gid)) ||
385: chmod(path, mode)) {
386: warn("%s", path);
387: }
388: }
389:
390: /*
391: * usage --
392: * print a usage message and die
393: */
394: void
395: usage()
396: {
397: (void)fprintf(stderr, "\
398: usage: install [-cs] [-f flags] [-g group] [-m mode] [-o owner] file1 file2\n\
399: install [-cs] [-f flags] [-g group] [-m mode] [-o owner] file1 ... fileN directory\n\
400: install -d [-g group] [-m mode] [-o owner] directory ...\n");
401: exit(1);
402: }
![[BACK]](/icons/back.gif){kind=icon}
Return to xinstall.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / xinstall