2008-03-15 02:22:08 -04:00
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#include <stdio.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <limits.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <assert.h>
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#include "util.h"
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int main(int argc, char *argv[]) {
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2008-05-28 02:01:24 -04:00
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if(argc < 7) {
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fprintf(stderr, "Usage: zfsaddhomedir homedir refquota skeldir uid gid mode acl\n");
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2008-03-15 02:22:08 -04:00
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return 1;
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}
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// TODO: check return of spawnv
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{
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char *homedir = argv[1];
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2008-05-28 02:01:24 -04:00
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char *skeldir = argv[3];
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char refquota[32];
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char *mode = argv[6];
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char *acl = (argc >= 8) ? argv[7] : NULL;
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2008-03-15 02:22:08 -04:00
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uid_t uid, gid;
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char *zfs_bin = "/usr/sbin/zfs";
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char *chmod_bin = "/usr/bin/chmod";
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char *dataset = homedir + 1;
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char *create_argv[] = { "zfs", "create", dataset, NULL };
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2008-05-28 02:01:24 -04:00
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char *quota_argv[] = { "zfs", "set", refquota, dataset, NULL };
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2008-03-15 02:22:08 -04:00
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char *mode_argv[] = { "chmod", mode, homedir, NULL };
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char *acl_argv[] = { "chmod", acl, homedir, NULL };
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DIR *skel;
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struct dirent *skelent;
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assert(homedir[0]);
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2008-05-28 02:01:24 -04:00
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uid = atol(argv[4]);
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gid = atol(argv[5]);
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snprintf(refquota, sizeof(refquota), "refquota=%s", argv[2]);
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2008-03-15 02:22:08 -04:00
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if(spawnv(zfs_bin, create_argv))
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return 1;
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if(spawnv(zfs_bin, quota_argv))
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return 1;
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if(spawnv(chmod_bin, mode_argv))
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return 1;
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if(acl && spawnv(chmod_bin, acl_argv))
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return 1;
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skel = opendir(skeldir);
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if (!skel) {
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errorpe("failed to open %s", skeldir);
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return -1;
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}
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while ((skelent = readdir(skel))) {
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struct stat sb;
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char src[PATH_MAX], dest[PATH_MAX];
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if (!strcmp(skelent->d_name, ".") || !strcmp(skelent->d_name, ".."))
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continue;
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snprintf(src, sizeof(src), "%s/%s", skeldir, skelent->d_name);
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snprintf(dest, sizeof(dest), "/%s/%s", homedir, skelent->d_name);
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lstat(src, &sb);
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if (sb.st_uid || sb.st_gid) {
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warn("not creating %s due to ownership", dest);
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continue;
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}
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if (S_ISREG(sb.st_mode)) {
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int bytes;
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char buf[4096];
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int srcfd = open(src, O_RDONLY);
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if (srcfd == -1) {
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warnpe("open: %s", src);
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continue;
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}
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int destfd = open(dest, O_WRONLY|O_CREAT|O_EXCL, sb.st_mode & 0777);
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if (destfd == -1) {
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warnpe("open: %s", dest);
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close(srcfd);
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continue;
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}
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for (;;) {
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bytes = read(srcfd, buf, sizeof(buf));
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if (!bytes)
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break;
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if (bytes < 0) {
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warnpe("read");
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break;
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}
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if (write(destfd, buf, bytes) < 0) {
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warnpe("write");
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break;
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}
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}
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2008-03-16 05:51:56 -04:00
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if (fchown(destfd, uid, gid))
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errorpe("chown: %s", dest);
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2008-03-15 02:22:08 -04:00
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close(srcfd);
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close(destfd);
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} else if (S_ISDIR(sb.st_mode)) {
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if (mkdir(dest, sb.st_mode & 0777)) {
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warnpe("mkdir: %s", dest);
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continue;
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}
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if (chown(dest, uid, gid))
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errorpe("chown: %s", dest);
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} else if (S_ISLNK(sb.st_mode)) {
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char lnkdest[PATH_MAX];
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int bytes;
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bytes = readlink(src, lnkdest, sizeof(lnkdest));
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lnkdest[bytes] = '\0';
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if (bytes == -1) {
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warnpe("readlink: %s", src);
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continue;
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}
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if (symlink(lnkdest, dest)) {
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warnpe("symlink: %s", dest);
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continue;
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}
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if (lchown(dest, uid, gid))
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errorpe("lchown: %s", dest);
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} else {
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warn("not creating %s", dest);
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}
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}
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closedir(skel);
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if (chown(homedir, uid, gid)) {
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errorpe("failed to chown %s", homedir);
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return -1;
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}
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}
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return 0;
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}
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