install: bsd make compatibility
This commit is contained in:
Eivind Uggedal
sin
257
xinstall.c
Normal file
257
xinstall.c
Normal file
@@ -0,0 +1,257 @@
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/* See LICENSE file for copyright and license details. */
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#include <grp.h>
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#include <pwd.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include "util.h"
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#include "text.h"
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static int Dflag = 0;
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static int sflag = 0;
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static gid_t group;
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static uid_t owner;
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static mode_t mode = 0755;
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static void
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make_dir(char *dir, int was_missing)
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{
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if (!mkdir(dir, was_missing ? 0755 : mode)) {
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if (!was_missing && (lchown(dir, owner, group) < 0))
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eprintf("lchmod %s:", dir);
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} else if (errno != EEXIST) {
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eprintf("mkdir %s:", dir);
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}
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}
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static void
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make_dirs(char *dir, int was_missing)
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{
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char *p;
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for (p = strchr(dir + (dir[0] == '/'), '/'); p; p = strchr(p + 1, '/')) {
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*p = '\0';
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make_dir(dir, was_missing);
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*p = '/';
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}
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make_dir(dir, was_missing);
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}
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static void
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strip(const char *filename)
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{
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pid_t pid = fork();
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switch (pid) {
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case -1:
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eprintf("fork:");
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case 0:
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execlp("strip", "strip", "--", filename, (char *)0);
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eprintf("exec: strip:");
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default:
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waitpid(pid, NULL, 0);
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break;
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}
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}
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static int
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install(const char *s1, const char *s2, int depth)
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{
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DIR *dp;
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FILE *f1, *f2;
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struct dirent *d;
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struct stat st;
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ssize_t r;
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char target[PATH_MAX], ns1[PATH_MAX], ns2[PATH_MAX];
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if (stat(s1, &st) < 0)
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eprintf("stat %s:", s1);
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if (S_ISLNK(st.st_mode)) {
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if ((r = readlink(s1, target, sizeof(target) - 1)) >= 0) {
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target[r] = '\0';
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if (unlink(s2) < 0 && errno != ENOENT)
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eprintf("unlink %s:", s2);
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else if (symlink(target, s2) < 0)
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eprintf("symlink %s -> %s:", s2, target);
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}
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} else if (S_ISDIR(st.st_mode)) {
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if (!(dp = opendir(s1)))
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eprintf("opendir %s:", s1);
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if (mkdir(s2, mode | 0111) < 0 && errno != EEXIST)
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eprintf("mkdir %s:", s2);
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while ((d = readdir(dp))) {
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if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
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continue;
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estrlcpy(ns1, s1, sizeof(ns1));
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if (s1[strlen(s1) - 1] != '/')
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estrlcat(ns1, "/", sizeof(ns1));
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estrlcat(ns1, d->d_name, sizeof(ns1));
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estrlcpy(ns2, s2, sizeof(ns2));
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if (s2[strlen(s2) - 1] != '/')
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estrlcat(ns2, "/", sizeof(ns2));
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estrlcat(ns2, d->d_name, sizeof(ns2));
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fnck(ns1, ns2, install, depth + 1);
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}
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closedir(dp);
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} else if (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode) ||
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S_ISSOCK(st.st_mode) || S_ISFIFO(st.st_mode)) {
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if (unlink(s2) < 0 && errno != ENOENT)
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eprintf("unlink %s:", s2);
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else if (mknod(s2, (st.st_mode & ~07777) | mode, st.st_rdev) < 0)
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eprintf("mknod %s:", s2);
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} else {
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if (!(f1 = fopen(s1, "r")))
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eprintf("fopen %s:", s1);
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if (!(f2 = fopen(s2, "w"))) {
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if (unlink(s2) < 0 && errno != ENOENT)
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eprintf("unlink %s:", s2);
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else if (!(f2 = fopen(s2, "w")))
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eprintf("fopen %s:", s2);
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}
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concat(f1, s1, f2, s2);
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fchmod(fileno(f2), mode);
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if (fclose(f2) == EOF)
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eprintf("fclose %s:", s2);
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if (fclose(f1) == EOF)
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eprintf("fclose %s:", s1);
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if (sflag)
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strip(s2);
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}
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if (lchown(s2, owner, group) < 0)
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eprintf("lchown %s:", s2);
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return 0;
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}
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static void
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usage(void)
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{
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eprintf("usage: %s [-g group] [-o owner] [-m mode] (-d dir ... | [-Ds] (-t dest source ... | source ... dest))\n", argv0);
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}
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int
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main(int argc, char *argv[])
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{
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int dflag = 0;
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char *gflag = 0;
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char *oflag = 0;
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char *mflag = 0;
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char *tflag = 0;
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struct group *gr;
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struct passwd *pw;
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struct stat st;
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char *p;
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ARGBEGIN {
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case 'd':
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dflag = 1;
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break;
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case 'D':
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Dflag = 1;
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break;
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case 's':
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sflag = 1;
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break;
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case 'g':
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gflag = EARGF(usage());
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break;
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case 'o':
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oflag = EARGF(usage());
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break;
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case 'm':
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mflag = EARGF(usage());
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break;
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case 't':
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tflag = EARGF(usage());
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break;
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default:
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usage();
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} ARGEND
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if (argc < 1 + (!tflag & !dflag) || dflag & (Dflag | sflag | !!tflag))
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usage();
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if (gflag) {
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errno = 0;
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gr = getgrnam(gflag);
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if (gr) {
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group = gr->gr_gid;
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} else {
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if (errno)
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eprintf("getgrnam %s:", gflag);
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group = estrtonum(gflag, 0, UINT_MAX);
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}
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} else {
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group = getgid();
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}
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if (oflag) {
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errno = 0;
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pw = getpwnam(oflag);
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if (pw) {
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owner = pw->pw_uid;
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} else {
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if (errno)
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eprintf("getpwnam %s:", oflag);
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owner = estrtonum(oflag, 0, UINT_MAX);
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}
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} else {
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owner = getuid();
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}
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if (mflag) {
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mode = parsemode(mflag, mode, 0);
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if (mode < 0)
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return 1;
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}
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if (tflag) {
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memmove(argv - 1, argv, argc);
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argv[argc++] = tflag;
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}
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if (tflag || argc > 2) {
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if (stat(argv[argc - 1], &st) < 0) {
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if ((errno == ENOENT) && Dflag) {
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make_dirs(argv[argc - 1], 1);
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} else {
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eprintf("stat %s:", argv[argc - 1]);
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}
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} else if (!S_ISDIR(st.st_mode)) {
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eprintf("%s: not a directory\n", argv[argc - 1]);
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}
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}
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if (dflag) {
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for (; *argv; argc--, argv++)
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make_dirs(*argv, 0);
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} else {
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if (stat(argv[argc - 1], &st) < 0) {
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if (errno != ENOENT)
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eprintf("stat %s:", argv[argc - 1]);
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if (tflag || argc > 2) {
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p = strrchr(argv[argc - 1], '/');
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*p = '\0';
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make_dirs(argv[argc - 1], 1);
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*p = '/';
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} else {
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make_dirs(argv[argc - 1], 1);
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}
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}
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enmasse(argc, argv, install);
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}
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return 0;
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}
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