2 * $Id: unix.c,v 1.6.2.1 2010-01-02 10:22:33 franklahm Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
11 #endif /* HAVE_CONFIG_H */
15 #include <sys/param.h>
16 #include <sys/types.h>
20 #include <atalk/afp.h>
21 #include <atalk/util.h>
22 #include <atalk/directory.h>
23 #include <atalk/volume.h>
24 #include <atalk/logger.h>
25 #include <atalk/unix.h>
27 /* -----------------------------
28 a dropbox is a folder where w is set but not r eg:
30 rwx----wx (is not asked by a Mac with OS >= 8.0 ?)
32 int stickydirmode(const char *name, const mode_t mode, const int dropbox, const mode_t v_umask)
37 /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
38 if ((dropbox & AFPVOL_DROPBOX)) {
41 if ( ( (mode & S_IWOTH) && !(mode & S_IROTH)) ||
42 ( (mode & S_IWGRP) && !(mode & S_IRGRP)) )
45 if ( seteuid(0) < 0) {
46 LOG(log_error, logtype_afpd, "stickydirmode: unable to seteuid root: %s", strerror(errno));
48 if ( (retval=chmod( name, ( (DIRBITS | mode | S_ISVTX) & ~v_umask) )) < 0) {
49 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", fullpathname(name), strerror(errno) );
51 LOG(log_debug, logtype_afpd, "stickydirmode: chmod \"%s\": %s", fullpathname(name), strerror(retval) );
57 #endif /* DROPKLUDGE */
60 * Ignore EPERM errors: We may be dealing with a directory that is
61 * group writable, in which case chmod will fail.
63 if ( (chmod( name, (DIRBITS | mode) & ~v_umask ) < 0) && errno != EPERM &&
64 !(errno == ENOENT && (dropbox & AFPVOL_NOADOUBLE)) )
66 LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", fullpathname(name), strerror(errno) );
73 /* ------------------------- */
74 int dir_rx_set(mode_t mode)
76 return (mode & (S_IXUSR | S_IRUSR)) == (S_IXUSR | S_IRUSR);
79 /* --------------------- */
80 int setfilmode(const char * name, mode_t mode, struct stat *st, mode_t v_umask)
83 mode_t mask = S_IRWXU | S_IRWXG | S_IRWXO; /* rwx for owner group and other, by default */
86 if (lstat(name, &sb) != 0)
91 if (S_ISLNK(st->st_mode)) return 0; /* we don't want to change link permissions */
93 mode |= st->st_mode & ~mask; /* keep other bits from previous mode */
94 if ( chmod( name, mode & ~v_umask ) < 0 && errno != EPERM ) {
100 /* -------------------
101 system rmdir with afp error code.
102 ENOENT is not an error.
104 int netatalk_rmdir(const char *name)
106 if (rmdir(name) < 0) {
111 return AFPERR_DIRNEMPT;
114 return AFPERR_ACCESS;
124 /* -------------------
125 system unlink with afp error code.
126 ENOENT is not an error.
128 int netatalk_unlink(const char *name)
130 if (unlink(name) < 0) {
138 return AFPERR_ACCESS;
146 char *fullpathname(const char *name)
148 static char wd[ MAXPATHLEN + 1];
150 if ( getcwd( wd , MAXPATHLEN) ) {
151 strlcat(wd, "/", MAXPATHLEN);
152 strlcat(wd, name, MAXPATHLEN);
155 strlcpy(wd, name, MAXPATHLEN);
160 int copy_file(const char *src, const char *dst, mode_t mode)
169 if ((sfd = open(src, O_RDONLY)) < 0) {
170 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): open '%s' error: %s",
171 src, dst, src, strerror(errno));
175 if ((dfd = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) {
176 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): open '%s' error: %s",
177 src, dst, dst, strerror(errno));
182 while ((cc = read(sfd, filebuf, sizeof(filebuf)))) {
186 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): read '%s' error: %s",
187 src, dst, src, strerror(errno));
194 if ((cc = write(dfd, filebuf, buflen)) < 0) {
197 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): read '%s' error: %s",
198 src, dst, dst, strerror(errno));
215 /* don't bother to report an error if there's already one */
216 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): close '%s' error: %s",
217 src, dst, dst, strerror(errno));
225 /* This is equivalent of unix rename(). */
226 int unix_rename(const char *oldpath, const char *newpath)
229 char pd_name[PATH_MAX+1];
235 if (rename(oldpath, newpath) < 0)
238 for (i = 0; i <= PATH_MAX && newpath[i] != '\0'; i++)
239 pd_name[i] = newpath[i];
242 while (i > 0 && pd_name[i] != '/') i--;
243 if (pd_name[i] == '/') i++;
245 pd_name[i++] = '.'; pd_name[i++] = '\0';
247 if (stat(pd_name, &pd_stat) < 0) {
248 LOG(log_error, logtype_afpd, "stat() of parent dir failed: pd_name = %s, uid = %d: %s",
249 pd_name, geteuid(), strerror(errno));
253 /* So we have SGID bit set... */
254 if ((S_ISGID & pd_stat.st_mode) != 0) {
257 LOG(log_error, logtype_afpd, "seteuid() failed: %s", strerror(errno));
258 if (recursive_chown(newpath, uid, pd_stat.st_gid) < 0)
259 LOG(log_error, logtype_afpd, "chown() of parent dir failed: newpath=%s, uid=%d: %s",
260 pd_name, geteuid(), strerror(errno));