/*
- * $Id: ad_open.c,v 1.61 2010-01-04 13:49:48 franklahm Exp $
- *
* Copyright (c) 1999 Adrian Sun (asun@u.washington.edu)
* Copyright (c) 1990,1991 Regents of The University of Michigan.
* All Rights Reserved.
/* last place for failure. */
if (sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
+ munmap(buf, st.st_size + shiftdata);
goto bail_lock;
}
return -1;
}
- return stat( p, stbuf );
+ return stat(p, stbuf);
}
/* ----------------
if (default_uid != (uid_t)-1) {
/* we are root (admin) */
id = (default_uid)?default_uid:stbuf->st_uid;
- ret = chown( path, id, stbuf->st_gid );
+ ret = chown(path, id, stbuf->st_gid);
}
#endif
return ret;
int st_invalid;
struct stat stbuf;
-#ifdef DEBUG
- LOG(log_debug9, logtype_default, "ad_mkdir: Creating directory with mode %d", mode);
-#endif
+ LOG(log_debug, logtype_default, "ad_mkdir(\"%s\", %04o) {cwd: \"%s\"}",
+ path, mode, getcwdpath());
st_invalid = ad_mode_st(path, &mode, &stbuf);
ret = mkdir( path, mode );
* @returns 0 on success
*
* @note It's not possible to open the header file O_RDONLY -- the read
- * will fail and return an error. this refcounts things now.
+ * will fail and return an error. this refcounts things now.\n
+ * metadata(ressource)-fork only gets created with O_CREAT.
*/
int ad_open( const char *path, int adflags, int oflags, int mode, struct adouble *ad)
{
ad->ad_adflags = adflags;
ad->ad_resource_fork.adf_refcount = 0;
ad->ad_data_fork.adf_refcount = 0;
+ ad->ad_data_fork.adf_syml=0;
}
else {
ad->ad_open_forks = ((ad->ad_data_fork.adf_refcount > 0) ? ATTRBIT_DOPEN : 0);
admode = mode;
}
}
- ad->ad_data_fork.adf_fd =open( path, hoflags, admode );
- if (ad->ad_data_fork.adf_fd < 0 ) {
+
+ ad->ad_data_fork.adf_fd = open(path, hoflags | ad_get_syml_opt(ad), admode);
+
+ if (ad->ad_data_fork.adf_fd == -1) {
if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
hoflags = oflags;
- ad->ad_data_fork.adf_fd = open( path, hoflags, admode );
+ ad->ad_data_fork.adf_fd = open( path, hoflags | ad_get_syml_opt(ad), admode );
+ }
+ if (ad->ad_data_fork.adf_fd == -1 && errno == OPEN_NOFOLLOW_ERRNO) {
+ int lsz;
+
+ ad->ad_data_fork.adf_syml = malloc(MAXPATHLEN+1);
+ lsz = readlink(path, ad->ad_data_fork.adf_syml, MAXPATHLEN);
+ if (lsz <= 0) {
+ free(ad->ad_data_fork.adf_syml);
+ return -1;
+ }
+ ad->ad_data_fork.adf_syml[lsz] = 0;
+ ad->ad_data_fork.adf_fd = -2; /* -2 means its a symlink */
}
}
- if ( ad->ad_data_fork.adf_fd < 0)
+
+ if ( ad->ad_data_fork.adf_fd == -1 )
return -1;
AD_SET(ad->ad_data_fork.adf_off);
return -1;
}
ad_refresh(ad);
+ /* it's not new anymore */
+ ad->ad_md->adf_flags &= ~( O_TRUNC | O_CREAT );
ad->ad_md->adf_refcount++;
goto sfm;
}
if (!(adflags & ADFLAGS_RDONLY)) {
hoflags = (hoflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
}
- ad->ad_md->adf_fd = open( ad_p, hoflags, 0 );
+ ad->ad_md->adf_fd = open(ad_p, hoflags | ad_get_syml_opt(ad), 0);
if (ad->ad_md->adf_fd < 0 ) {
if ((errno == EACCES || errno == EROFS) && !(oflags & O_RDWR)) {
hoflags = oflags & ~(O_CREAT | O_EXCL);
- ad->ad_md->adf_fd = open( ad_p, hoflags, 0 );
+ ad->ad_md->adf_fd = open(ad_p, hoflags | ad_get_syml_opt(ad), 0);
}
}
* here.
* if ((oflags & O_CREAT) ==> (oflags & O_RDWR)
*/
+ LOG(log_debug, logtype_default, "ad_open(\"%s\"): {cwd: \"%s\"} creating adouble file",
+ ad_p, getcwdpath());
admode = mode;
errno = 0;
st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
admode = mode;
}
admode = ad_hf_mode(admode);
- if ( errno == ENOENT && !(adflags & ADFLAGS_NOADOUBLE) && ad->ad_flags != AD_VERSION2_OSX) {
- if (ad->ad_ops->ad_mkrf( ad_p) < 0) {
+ if ((errno == ENOENT) && (ad->ad_flags != AD_VERSION2_OSX)) {
+ if (ad->ad_ops->ad_mkrf(ad_p) < 0) {
return ad_error(ad, adflags);
}
admode = mode;
return 0 ;
}
-/* -----------------------------------
- * return only metadata but try very hard
+/*!
+ * @brief open metadata, possibly as root
+ *
+ * Return only metadata but try very hard ie at first try as user, then try as root.
+ *
+ * @param name name of file/dir
+ * @param flags ADFLAGS_DIR: name is a directory \n
+ * ADFLAGS_CREATE: force creation of header file, but only as user, not as root\n
+ * ADFLAGS_OPENFORKS: test if name is open by another afpd process
+ *
+ * @param adp pointer to struct adouble
+ *
+ * @note caller MUST pass ADFLAGS_DIR for directories. Whether ADFLAGS_CREATE really creates
+ * a adouble file depends on various other volume options, eg. ADVOL_CACHE
*/
int ad_metadata(const char *name, int flags, struct adouble *adp)
{
uid_t uid;
- int ret, err;
- int dir = flags & ADFLAGS_DIR;
- int adouble = 0;
-
- if (!(flags & ADFLAGS_NOADOUBLE)) {
- adouble = O_CREAT;
- }
-
- /* Open with O_CREAT, thus enumarating a dir will create missing adouble files, see: */
- /* http://marc.info/?l=netatalk-devel&m=124039156832408&w=2 */
- if ((ret = ad_open(name, ADFLAGS_HF | dir, O_RDWR | adouble, 0666, adp)) < 0 && errno == EACCES) {
+ int ret, err, dir;
+ int create = O_RDONLY;
+
+ dir = flags & ADFLAGS_DIR;
+
+ /* Check if we shall call ad_open with O_CREAT */
+ if ( (adp->ad_options & ADVOL_CACHE)
+ && ! (adp->ad_options & ADVOL_NOADOUBLE)
+ && (flags & ADFLAGS_CREATE) ) {
+ create = O_CREAT | O_RDWR;
+ }
+ if ((ret = ad_open(name, ADFLAGS_HF | dir, create, 0666, adp)) < 0 && errno == EACCES) {
uid = geteuid();
if (seteuid(0)) {
LOG(log_error, logtype_default, "ad_metadata(%s): seteuid failed %s", name, strerror(errno));
return ret;
}
+/*
+ * @brief openat like wrapper for ad_metadata
+ */
+int ad_metadataat(int dirfd, const char *name, int flags, struct adouble *adp)
+{
+ int ret = 0;
+ int cwdfd = -1;
+
+ if (dirfd != -1) {
+ if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
+ ret = -1;
+ goto exit;
+ }
+ }
+
+ if (ad_metadata(name, flags, adp) < 0) {
+ ret = -1;
+ goto exit;
+ }
+
+ if (dirfd != -1) {
+ if (fchdir(cwdfd) != 0) {
+ LOG(log_error, logtype_afpd, "ad_openat: cant chdir back, exiting");
+ exit(EXITERR_SYS);
+ }
+ }
+
+exit:
+ if (cwdfd != -1)
+ close(cwdfd);
+
+ return ret;
+
+}
+
/* ----------------------------------- */
static int new_rfork(const char *path, struct adouble *ad, int adflags)
{
memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
}
- if (stat(path, &st) < 0) {
+ if (ostat(path, &st, ad_get_syml_opt(ad)) < 0) {
return -1;
}
return ad->ad_ops->ad_header_read(ad, NULL);
}
+
+int ad_openat(int dirfd, /* dir fd openat like */
+ const char *path,
+ int adflags,
+ int oflags,
+ int mode,
+ struct adouble *ad)
+{
+ int ret = 0;
+ int cwdfd = -1;
+
+ if (dirfd != -1) {
+ if ((cwdfd = open(".", O_RDONLY) == -1) || (fchdir(dirfd) != 0)) {
+ ret = -1;
+ goto exit;
+ }
+ }
+
+ if (ad_open(path, adflags, oflags, mode, ad) < 0) {
+ ret = -1;
+ goto exit;
+ }
+
+ if (dirfd != -1) {
+ if (fchdir(cwdfd) != 0) {
+ LOG(log_error, logtype_afpd, "ad_openat: cant chdir back, exiting");
+ exit(EXITERR_SYS);
+ }
+ }
+
+exit:
+ if (cwdfd != -1)
+ close(cwdfd);
+
+ return ret;
+}
projects / netatalk.git / blobdiff