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author | 2021-05-09 14:20:58 -0400 | |
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committer | 2021-05-09 14:20:58 -0400 | |
commit | 5fd83771641d15c418f747bd343ba6738d3875f7 (patch) | |
tree | 5abf0f78f680d9837dbd93d4d4c3933bb7509599 /file_cmds/install/xinstall.c | |
download | apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.gz apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.zst apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.zip |
Import macOS userland
adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106
Diffstat (limited to 'file_cmds/install/xinstall.c')
-rw-r--r-- | file_cmds/install/xinstall.c | 816 |
1 files changed, 816 insertions, 0 deletions
diff --git a/file_cmds/install/xinstall.c b/file_cmds/install/xinstall.c new file mode 100644 index 0000000..5e6bcec --- /dev/null +++ b/file_cmds/install/xinstall.c @@ -0,0 +1,816 @@ +/* + * Copyright (c) 1987, 1993 + * The Regents of the University of California. 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 <sys/cdefs.h> +#ifndef lint +__used static const char copyright[] = +"@(#) Copyright (c) 1987, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "From: @(#)xinstall.c 8.1 (Berkeley) 7/21/93"; +#endif +__used static const char rcsid[] = + "$FreeBSD: src/usr.bin/xinstall/xinstall.c,v 1.43 2001/05/30 07:08:49 ru Exp $"; +#endif /* not lint */ + +#include <sys/param.h> +#include <sys/wait.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/mount.h> + +#include <ctype.h> +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <grp.h> +#include <paths.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sysexits.h> +#include <utime.h> +#include <spawn.h> + +#ifdef __APPLE__ +#include <TargetConditionals.h> +#include <copyfile.h> +#endif /* __APPLE__ */ + +#include "pathnames.h" + +/* Bootstrap aid - this doesn't exist in most older releases */ +#ifndef MAP_FAILED +#define MAP_FAILED ((void *)-1) /* from <sys/mman.h> */ +#endif + +#define DIRECTORY 0x01 /* Tell install it's a directory. */ +#define SETFLAGS 0x02 /* Tell install to set flags. */ +#define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) +#define BACKUP_SUFFIX ".old" + +struct passwd *pp; +struct group *gp; +gid_t gid; +uid_t uid; +int dobackup, docompare, dodir, dopreserve, dostrip, nommap, safecopy, verbose; +mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; +char *suffix = BACKUP_SUFFIX; + +void copy __P((int, char *, int, char *, off_t)); +int compare __P((int, const char *, size_t, int, const char *, size_t)); +int create_newfile __P((char *, int, struct stat *)); +int create_tempfile __P((char *, char *, size_t)); +void install __P((char *, char *, u_long, u_int)); +void install_dir __P((char *)); +u_long numeric_id __P((char *, char *)); +void strip __P((char *)); +int trymmap __P((int)); +void usage __P((void)); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + struct stat from_sb, to_sb; + mode_t *set; + u_long fset = 0; + int ch, no_target; + u_int iflags; + char *flags, *group, *owner, *to_name; + + iflags = 0; + group = owner = NULL; + while ((ch = getopt(argc, argv, "B:bCcdf:g:Mm:o:pSsv")) != -1) + switch((char)ch) { + case 'B': + suffix = optarg; + /* FALLTHROUGH */ + case 'b': + dobackup = 1; + break; + case 'C': + docompare = 1; + break; + case 'c': + /* For backwards compatibility. */ + break; + case 'd': + dodir = 1; + break; + case 'f': + flags = optarg; + if (strtofflags(&flags, &fset, NULL)) + errx(EX_USAGE, "%s: invalid flag", flags); + iflags |= SETFLAGS; + break; + case 'g': + group = optarg; + break; + case 'M': + nommap = 1; + break; + case 'm': + if (!(set = setmode(optarg))) + errx(EX_USAGE, "invalid file mode: %s", + optarg); + mode = getmode(set, 0); + free(set); + break; + case 'o': + owner = optarg; + break; + case 'p': + docompare = dopreserve = 1; + break; + case 'S': + safecopy = 1; + break; + case 's': + dostrip = 1; + break; + case 'v': + verbose = 1; + break; + case '?': + default: + usage(); + } + argc -= optind; + argv += optind; + + /* some options make no sense when creating directories */ + if ((safecopy || dostrip) && dodir) + usage(); + + /* + * Older versions allowed -d -C combo. Issue a warning + * for now, but turn this into an error before 4.5-RELEASE. + */ + if (docompare && dodir) + warnx("the -d and -C options may not be specified together"); + + /* must have at least two arguments, except when creating directories */ + if (argc < 2 && !dodir) + usage(); + + /* need to make a temp copy so we can compare stripped version */ + if (docompare && dostrip) + safecopy = 1; + + /* get group and owner id's */ + if (group != NULL) { + if ((gp = getgrnam(group)) != NULL) + gid = gp->gr_gid; + else + gid = (uid_t)numeric_id(group, "group"); + } else + gid = (gid_t)-1; + + if (owner != NULL) { + if ((pp = getpwnam(owner)) != NULL) + uid = pp->pw_uid; + else + uid = (uid_t)numeric_id(owner, "user"); + } else + uid = (uid_t)-1; + + if (dodir) { + for (; *argv != NULL; ++argv) + install_dir(*argv); + exit(EX_OK); + /* NOTREACHED */ + } + + no_target = stat(to_name = argv[argc - 1], &to_sb); + if (!no_target && S_ISDIR(to_sb.st_mode)) { + for (; *argv != to_name; ++argv) + install(*argv, to_name, fset, iflags | DIRECTORY); + exit(EX_OK); + /* NOTREACHED */ + } + + /* can't do file1 file2 directory/file */ + if (argc != 2) + usage(); + + if (!no_target) { + if (stat(*argv, &from_sb)) + err(EX_OSERR, "%s", *argv); + if (!S_ISREG(to_sb.st_mode)) { + errno = EFTYPE; + err(EX_OSERR, "%s", to_name); + } + if (to_sb.st_dev == from_sb.st_dev && + to_sb.st_ino == from_sb.st_ino) + errx(EX_USAGE, + "%s and %s are the same file", *argv, to_name); + } + install(*argv, to_name, fset, iflags); + exit(EX_OK); + /* NOTREACHED */ +} + +u_long +numeric_id(name, type) + char *name, *type; +{ + u_long val; + char *ep; + + /* + * XXX + * We know that uid_t's and gid_t's are unsigned longs. + */ + errno = 0; + val = strtoul(name, &ep, 10); + if (errno) + err(EX_NOUSER, "%s", name); + if (*ep != '\0') + errx(EX_NOUSER, "unknown %s %s", type, name); + return (val); +} + +/* + * install -- + * build a path name and install the file + */ +void +install(from_name, to_name, fset, flags) + char *from_name, *to_name; + u_long fset; + u_int flags; +{ + struct stat from_sb, temp_sb, to_sb; + struct utimbuf utb; + int devnull, files_match, from_fd=0, serrno, target; + int tempcopy, temp_fd, to_fd=0; + char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN]; + + files_match = 0; + + /* If try to install NULL file to a directory, fails. */ + if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { + if (stat(from_name, &from_sb)) + err(EX_OSERR, "%s", from_name); + if (!S_ISREG(from_sb.st_mode)) { + errno = EFTYPE; + err(EX_OSERR, "%s", from_name); + } + /* Build the target path. */ + if (flags & DIRECTORY) { + (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", + to_name, + (p = strrchr(from_name, '/')) ? ++p : from_name); + to_name = pathbuf; + } + devnull = 0; + } else { + devnull = 1; + } + + target = stat(to_name, &to_sb) == 0; + + /* Only install to regular files. */ + if (target && !S_ISREG(to_sb.st_mode)) { + errno = EFTYPE; + warn("%s", to_name); + return; + } + + /* Only copy safe if the target exists. */ + tempcopy = safecopy && target; + + if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0) + err(EX_OSERR, "%s", from_name); + + /* If we don't strip, we can compare first. */ + if (docompare && !dostrip && target) { + if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) + err(EX_OSERR, "%s", to_name); + if (devnull) + files_match = to_sb.st_size == 0; + else + files_match = !(compare(from_fd, from_name, + (size_t)from_sb.st_size, to_fd, + to_name, (size_t)to_sb.st_size)); + + /* Close "to" file unless we match. */ + if (!files_match) + (void)close(to_fd); + } + + if (!files_match) { + if (tempcopy) { + to_fd = create_tempfile(to_name, tempfile, + sizeof(tempfile)); + if (to_fd < 0) + err(EX_OSERR, "%s", tempfile); + } else { + if ((to_fd = create_newfile(to_name, target, + &to_sb)) < 0) + err(EX_OSERR, "%s", to_name); + if (verbose) + (void)printf("install: %s -> %s\n", + from_name, to_name); + } + if (!devnull) + copy(from_fd, from_name, to_fd, + tempcopy ? tempfile : to_name, from_sb.st_size); + } + + if (dostrip) { + strip(tempcopy ? tempfile : to_name); + + /* + * Re-open our fd on the target, in case we used a strip + * that does not work in-place -- like GNU binutils strip. + */ + close(to_fd); + to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0); + if (to_fd < 0) + err(EX_OSERR, "stripping %s", to_name); + } + + /* + * Compare the stripped temp file with the target. + */ + if (docompare && dostrip && target) { + temp_fd = to_fd; + + /* Re-open to_fd using the real target name. */ + if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) + err(EX_OSERR, "%s", to_name); + + if (fstat(temp_fd, &temp_sb)) { + serrno = errno; + (void)unlink(tempfile); + errno = serrno; + err(EX_OSERR, "%s", tempfile); + } + + if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd, + to_name, (size_t)to_sb.st_size) == 0) { + /* + * If target has more than one link we need to + * replace it in order to snap the extra links. + * Need to preserve target file times, though. + */ + if (to_sb.st_nlink != 1) { + utb.actime = to_sb.st_atime; + utb.modtime = to_sb.st_mtime; + (void)utime(tempfile, &utb); + } else { + files_match = 1; + (void)unlink(tempfile); + } + (void) close(temp_fd); + } + } + + /* + * Move the new file into place if doing a safe copy + * and the files are different (or just not compared). + */ + if (tempcopy && !files_match) { + /* Try to turn off the immutable bits. */ + if (to_sb.st_flags & NOCHANGEBITS) + (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); + if (dobackup) { + if (snprintf(backup, MAXPATHLEN, "%s%s", to_name, + suffix) != strlen(to_name) + strlen(suffix)) { + unlink(tempfile); + errx(EX_OSERR, "%s: backup filename too long", + to_name); + } + if (verbose) + (void)printf("install: %s -> %s\n", to_name, backup); + if (rename(to_name, backup) < 0) { + serrno = errno; + unlink(tempfile); + errno = serrno; + err(EX_OSERR, "rename: %s to %s", to_name, + backup); + } + } + if (verbose) + (void)printf("install: %s -> %s\n", from_name, to_name); + if (rename(tempfile, to_name) < 0) { + serrno = errno; + unlink(tempfile); + errno = serrno; + err(EX_OSERR, "rename: %s to %s", + tempfile, to_name); + } + + /* Re-open to_fd so we aren't hosed by the rename(2). */ + (void) close(to_fd); + if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) + err(EX_OSERR, "%s", to_name); + } + +#ifdef __APPLE__ + /* in case mtime is modified */ + if (!devnull && (S_ISLNK(from_sb.st_mode) || S_ISREG(from_sb.st_mode)) && + fcopyfile(from_fd, to_fd, NULL, COPYFILE_XATTR) < 0) { + warn("%s: unable to copy extended attributes from %s", to_name, from_name); + } +#endif /* __APPLE__ */ + /* + * Preserve the timestamp of the source file if necessary. + */ + if (dopreserve && !files_match && !devnull) { + utb.actime = from_sb.st_atime; + utb.modtime = from_sb.st_mtime; + (void)utime(to_name, &utb); + } + + if (fstat(to_fd, &to_sb) == -1) { + serrno = errno; + (void)unlink(to_name); + errno = serrno; + err(EX_OSERR, "%s", to_name); + } + + /* + * Set owner, group, mode for target; do the chown first, + * chown may lose the setuid bits. + */ + if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || + (uid != (uid_t)-1 && uid != to_sb.st_uid) || + (mode != to_sb.st_mode)) { + /* Try to turn off the immutable bits. */ + if (to_sb.st_flags & NOCHANGEBITS) + (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS); + } + + if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || + (uid != (uid_t)-1 && uid != to_sb.st_uid)) + if (fchown(to_fd, uid, gid) == -1) { + serrno = errno; + (void)unlink(to_name); + errno = serrno; + err(EX_OSERR,"%s: chown/chgrp", to_name); + } + + if (mode != to_sb.st_mode) + if (fchmod(to_fd, mode)) { + serrno = errno; + (void)unlink(to_name); + errno = serrno; + err(EX_OSERR, "%s: chmod", to_name); + } + + /* + * If provided a set of flags, set them, otherwise, preserve the + * flags, except for the dump flag. + * NFS does not support flags. Ignore ENOTSUP flags if we're just + * trying to turn off UF_NODUMP. If we're trying to set real flags, + * then warn if the the fs doesn't support it, otherwise fail. + */ + if (!devnull && fchflags(to_fd, + flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) { + if (flags & SETFLAGS) { + if (errno == ENOTSUP) + warn("%s: chflags", to_name); + else { + serrno = errno; + (void)unlink(to_name); + errno = serrno; + err(EX_OSERR, "%s: chflags", to_name); + } + } + } +#ifdef __APPLE__ + /* the ACL could prevent credential/permission system calls later on... */ + if (!devnull && (S_ISLNK(from_sb.st_mode) || S_ISREG(from_sb.st_mode)) && + (fcopyfile(from_fd, to_fd, NULL, COPYFILE_ACL) < 0)) { + warn("%s: unable to copy ACL from %s", to_name, from_name); + } +#endif /* __APPLE__ */ + + (void)close(to_fd); + if (!devnull) + (void)close(from_fd); +} + +/* + * compare -- + * compare two files; non-zero means files differ + */ +int +compare(int from_fd, const char *from_name, size_t from_len, + int to_fd, const char *to_name, size_t to_len) +{ + char *p, *q; + int rv; + int done_compare; + + rv = 0; + if (from_len != to_len) + return 1; + + if (from_len <= 8 * 1024 * 1024) { + done_compare = 0; + if (trymmap(from_fd) && trymmap(to_fd)) { + p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0); + if (p == (char *)MAP_FAILED) + goto out; + q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0); + if (q == (char *)MAP_FAILED) { + munmap(p, from_len); + goto out; + } + + rv = memcmp(p, q, from_len); + munmap(p, from_len); + munmap(q, from_len); + done_compare = 1; + } + out: + if (!done_compare) { + char buf1[MAXBSIZE]; + char buf2[MAXBSIZE]; + int n1, n2; + + rv = 0; + lseek(from_fd, 0, SEEK_SET); + lseek(to_fd, 0, SEEK_SET); + while (rv == 0) { + n1 = read(from_fd, buf1, sizeof(buf1)); + if (n1 == 0) + break; /* EOF */ + else if (n1 > 0) { + n2 = read(to_fd, buf2, n1); + if (n2 == n1) + rv = memcmp(buf1, buf2, n1); + else + rv = 1; /* out of sync */ + } else + rv = 1; /* read failure */ + } + lseek(from_fd, 0, SEEK_SET); + lseek(to_fd, 0, SEEK_SET); + } + } else + rv = 1; /* don't bother in this case */ + + return rv; +} + +/* + * create_tempfile -- + * create a temporary file based on path and open it + */ +int +create_tempfile(path, temp, tsize) + char *path; + char *temp; + size_t tsize; +{ + char *p; + + (void)strncpy(temp, path, tsize); + temp[tsize - 1] = '\0'; + if ((p = strrchr(temp, '/')) != NULL) + p++; + else + p = temp; + (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p); + temp[tsize - 1] = '\0'; + return (mkstemp(temp)); +} + +/* + * create_newfile -- + * create a new file, overwriting an existing one if necessary + */ +int +create_newfile(path, target, sbp) + char *path; + int target; + struct stat *sbp; +{ + char backup[MAXPATHLEN]; + + if (target) { + /* + * Unlink now... avoid ETXTBSY errors later. Try to turn + * off the append/immutable bits -- if we fail, go ahead, + * it might work. + */ + if (sbp->st_flags & NOCHANGEBITS) + (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS); + + if (dobackup) { + if (snprintf(backup, MAXPATHLEN, "%s%s", + path, suffix) != strlen(path) + strlen(suffix)) + errx(EX_OSERR, "%s: backup filename too long", + path); + (void)snprintf(backup, MAXPATHLEN, "%s%s", + path, suffix); + if (verbose) + (void)printf("install: %s -> %s\n", + path, backup); + if (rename(path, backup) < 0) + err(EX_OSERR, "rename: %s to %s", path, backup); + } else + (void)unlink(path); + } + + return (open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR)); +} + +/* + * copy -- + * copy from one file to another + */ +void +copy(from_fd, from_name, to_fd, to_name, size) + register int from_fd, to_fd; + char *from_name, *to_name; + off_t size; +{ + register int nr, nw; + int serrno; + char *p; + char buf[MAXBSIZE]; + int done_copy; + + /* Rewind file descriptors. */ + if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1) + err(EX_OSERR, "lseek: %s", from_name); + if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1) + err(EX_OSERR, "lseek: %s", to_name); + + /* + * Mmap and write if less than 8M (the limit is so we don't totally + * trash memory on big files. This is really a minor hack, but it + * wins some CPU back. + */ + done_copy = 0; + if (size <= 8 * 1048576 && trymmap(from_fd) && + (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED, + from_fd, (off_t)0)) != (char *)MAP_FAILED) { + if ((nw = write(to_fd, p, size)) != size) { + serrno = errno; + (void)unlink(to_name); + errno = nw > 0 ? EIO : serrno; + err(EX_OSERR, "%s", to_name); + } + done_copy = 1; + } + if (!done_copy) { + while ((nr = read(from_fd, buf, sizeof(buf))) > 0) + if ((nw = write(to_fd, buf, nr)) != nr) { + serrno = errno; + (void)unlink(to_name); + errno = nw > 0 ? EIO : serrno; + err(EX_OSERR, "%s", to_name); + } + if (nr != 0) { + serrno = errno; + (void)unlink(to_name); + errno = serrno; + err(EX_OSERR, "%s", from_name); + } + } +} + +/* + * strip -- + * use strip(1) to strip the target file + */ +void +strip(to_name) + char *to_name; +{ + pid_t pid; + int error; + extern char** environ; + char *const argv[] = { "xcrun", "strip", "-", to_name, NULL }; + + if (0 == (error = posix_spawnp(&pid, "xcrun", NULL, NULL, argv, environ))) { + int status = 0; + pid_t child = waitpid(pid, &status, 0); + if ((child == -1) || status) { + unlink(to_name); + errx(EX_SOFTWARE, "child process failed: xcrun strip - %s", to_name); + } + } else { + errno = error; + err(EX_OSERR, "xcrun strip - %s", to_name); + } +} + +/* + * install_dir -- + * build directory heirarchy + */ +void +install_dir(path) + char *path; +{ + register char *p; + struct stat sb; + int ch; + + for (p = path;; ++p) + if (!*p || (p != path && *p == '/')) { + ch = *p; + *p = '\0'; + if (stat(path, &sb)) { + if (errno != ENOENT || mkdir(path, 0755) < 0) { + err(EX_OSERR, "mkdir %s", path); + /* NOTREACHED */ + } else if (verbose) + (void)printf("install: mkdir %s\n", + path); + } else if (!S_ISDIR(sb.st_mode)) + errx(EX_OSERR, "%s exists but is not a directory", path); + if (!(*p = ch)) + break; + } + + if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid)) + warn("chown %u:%u %s", uid, gid, path); + if (chmod(path, mode)) + warn("chmod %o %s", mode, path); +} + +/* + * usage -- + * print a usage message and die + */ +void +usage() +{ + (void)fprintf(stderr, "\ +usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\ + [-o owner] file1 file2\n\ + install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n\ + [-o owner] file1 ... fileN directory\n\ + install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n"); + exit(EX_USAGE); + /* NOTREACHED */ +} + +/* + * trymmap -- + * return true (1) if mmap should be tried, false (0) if not. + */ +int +trymmap(fd) + int fd; +{ +/* + * The ifdef is for bootstrapping - f_fstypename doesn't exist in + * pre-Lite2-merge systems. + */ +#ifdef MFSNAMELEN + struct statfs stfs; + + if (nommap || fstatfs(fd, &stfs) != 0) + return (0); + if (strcmp(stfs.f_fstypename, "ufs") == 0 || + strcmp(stfs.f_fstypename, "cd9660") == 0) + return (1); +#endif + return (0); +} |