2 * $Id: unix.c,v 1.6 2009-10-27 10:24:02 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 (stat(name, &sb) != 0)
91 mode |= st->st_mode & ~mask; /* keep other bits from previous mode */
92 if ( chmod( name, mode & ~v_umask ) < 0 && errno != EPERM ) {
98 /* -------------------
99 system rmdir with afp error code.
100 ENOENT is not an error.
102 int netatalk_rmdir(const char *name)
104 if (rmdir(name) < 0) {
109 return AFPERR_DIRNEMPT;
112 return AFPERR_ACCESS;
122 /* -------------------
123 system unlink with afp error code.
124 ENOENT is not an error.
126 int netatalk_unlink(const char *name)
128 if (unlink(name) < 0) {
136 return AFPERR_ACCESS;
144 char *fullpathname(const char *name)
146 static char wd[ MAXPATHLEN + 1];
148 if ( getcwd( wd , MAXPATHLEN) ) {
149 strlcat(wd, "/", MAXPATHLEN);
150 strlcat(wd, name, MAXPATHLEN);
153 strlcpy(wd, name, MAXPATHLEN);
158 int copy_file(const char *src, const char *dst, mode_t mode)
167 if ((sfd = open(src, O_RDONLY)) < 0) {
168 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): open '%s' error: %s",
169 src, dst, src, strerror(errno));
173 if ((dfd = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) {
174 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): open '%s' error: %s",
175 src, dst, dst, strerror(errno));
180 while ((cc = read(sfd, filebuf, sizeof(filebuf)))) {
184 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): read '%s' error: %s",
185 src, dst, src, strerror(errno));
192 if ((cc = write(dfd, filebuf, buflen)) < 0) {
195 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): read '%s' error: %s",
196 src, dst, dst, strerror(errno));
213 /* don't bother to report an error if there's already one */
214 LOG(log_error, logtype_afpd, "copy_file('%s'/'%s'): close '%s' error: %s",
215 src, dst, dst, strerror(errno));
223 /* This is equivalent of unix rename(). */
224 int unix_rename(const char *oldpath, const char *newpath)
227 char pd_name[PATH_MAX+1];
233 if (rename(oldpath, newpath) < 0)
236 for (i = 0; i <= PATH_MAX && newpath[i] != '\0'; i++)
237 pd_name[i] = newpath[i];
240 while (i > 0 && pd_name[i] != '/') i--;
241 if (pd_name[i] == '/') i++;
243 pd_name[i++] = '.'; pd_name[i++] = '\0';
245 if (stat(pd_name, &pd_stat) < 0) {
246 LOG(log_error, logtype_afpd, "stat() of parent dir failed: pd_name = %s, uid = %d: %s",
247 pd_name, geteuid(), strerror(errno));
251 /* So we have SGID bit set... */
252 if ((S_ISGID & pd_stat.st_mode) != 0) {
255 LOG(log_error, logtype_afpd, "seteuid() failed: %s", strerror(errno));
256 if (recursive_chown(newpath, uid, pd_stat.st_gid) < 0)
257 LOG(log_error, logtype_afpd, "chown() of parent dir failed: newpath=%s, uid=%d: %s",
258 pd_name, geteuid(), strerror(errno));