/*
- * $Id: ad_open.c,v 1.30.6.18.2.1 2005-01-25 14:32:00 didg Exp $
+ * $Id: ad_open.c,v 1.30.6.18.2.2 2005-02-05 14:54:49 didg Exp $
*
* Copyright (c) 1999 Adrian Sun (asun@u.washington.edu)
* Copyright (c) 1990,1991 Regents of The University of Michigan.
#if AD_VERSION == AD_VERSION2
+/* update a version 2 adouble resource fork with our private entries */
static int ad_update(struct adouble *ad, const char *path)
{
struct stat st;
static off_t entry_len[ADEID_MAX];
static char databuf[ADEID_MAX][256], *buf;
int fd;
+ int ret = -1;
/* check to see if we should convert this header. */
- if (!path || (ad->ad_flags != AD_VERSION2))
+ if (!path || ad->ad_flags != AD_VERSION2)
return 0;
- if (!(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
- /* we were unable to open the file read write the last time
- */
+ if (!(ad->ad_hf.adf_flags & O_RDWR)) {
+ /* we were unable to open the file read write the last time */
return 0;
}
- if (ad->ad_eid[ADEID_RFORK].ade_off)
- shiftdata = ADEDOFF_RFORK_V2 -ad->ad_eid[ADEID_RFORK].ade_off;
+ if (ad->ad_eid[ADEID_RFORK].ade_off) {
+ shiftdata = ADEDOFF_RFORK_V2 -ad->ad_eid[ADEID_RFORK].ade_off;
+ }
memcpy(&nentries, ad->ad_data + ADEDOFF_NENTRIES, sizeof( nentries ));
nentries = ntohs( nentries );
if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
goto bail_err;
- if ((fd = open(path, O_RDWR)) < 0)
- goto bail_lock;
+ fd = ad->ad_hf.adf_fd;
- if (fstat(fd, &st) ||
- sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
- goto bail_open;
+ if (fstat(fd, &st)) {
+ goto bail_lock;
}
+
if (st.st_size > 0x7fffffff) {
- LOG(log_debug, logtype_default, "ad_update: file '%s' too big for update.", path);
- goto bail_truncate;
+ LOG(log_debug, logtype_default, "ad_update: file '%s' too big for update.", path);
+ errno = EIO;
+ goto bail_lock;
}
off = ad->ad_eid[ADEID_RFORK].ade_off;
if (off > st.st_size) {
- LOG(log_error, logtype_default, "ad_v1tov2: invalid resource fork offset. (off: %u)", off);
+ LOG(log_error, logtype_default, "ad_update: invalid resource fork offset. (off: %u)", off);
errno = EIO;
- goto bail_truncate;
+ goto bail_lock;
}
if (ad->ad_eid[ADEID_RFORK].ade_len > st.st_size - off) {
- LOG(log_error, logtype_default, "ad_v1tov2: invalid resource fork length. (rfork len: %u)", ad->ad_eid[ADEID_RFORK].ade_len);
+ LOG(log_error, logtype_default, "ad_update: invalid resource fork length. (rfork len: %u)", ad->ad_eid[ADEID_RFORK].ade_len);
errno = EIO;
- goto bail_truncate;
+ goto bail_lock;
}
- /* last place for failure. */
if ((void *) (buf = (char *)
mmap(NULL, st.st_size + shiftdata,
PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
MAP_FAILED) {
- goto bail_truncate;
+ goto bail_lock;
}
+ /* last place for failure. */
+ if (sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
+ goto bail_lock;
+ }
/* move the RFORK. this assumes that the RFORK is at the end */
if (off) {
}
munmap(buf, st.st_size + shiftdata);
- close(fd);
/* now, fix up our copy of the header */
memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
}
/* rebuild the header and cleanup */
- ad_flush(ad, ADFLAGS_HF );
- ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
-
LOG(log_debug, logtype_default, "updated AD2 header %s", path);
+ ad_flush(ad, ADFLAGS_HF );
+ ret = 0;
- return 0;
-
-bail_truncate:
- sys_ftruncate(fd, st.st_size);
-bail_open:
- close(fd);
bail_lock:
ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
bail_err:
- return -1;
+ return ret;
}
-
-/* FIXME work only if < 2GB */
-static int ad_v1tov2(struct adouble *ad, const char *path)
+/* ------------------------------------------
+ FIXME work only if < 2GB
+*/
+static int ad_convert(struct adouble *ad, const char *path)
{
struct stat st;
u_int16_t attr;
char *buf;
int fd, off;
+ int ret = -1;
/* use resource fork offset from file */
int shiftdata;
+ int toV2;
+ int toV1;
- /* check to see if we should convert this header. */
- if (!path || (ad->ad_version != AD_VERSION1))
- return 0;
-
- /* we want version1 anyway */
- if (ad->ad_flags != AD_VERSION2)
+ if (!path) {
return 0;
-
- if (!(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
- /* we were unable to open the file read write the last time
- */
+ }
+
+ if (!(ad->ad_hf.adf_flags & ( O_RDWR))) {
+ /* we were unable to open the file read write the last time */
return 0;
}
- if (!ad->ad_flags) {
- /* we don't really know what we want */
- ad->ad_flags = ad->ad_version;
+ /* check to see if we should convert this header. */
+ toV2 = ad->ad_version == AD_VERSION1 && ad->ad_flags == AD_VERSION2;
+ toV1 = ad->ad_version == AD_VERSION2 && ad->ad_flags == AD_VERSION1;
+
+ if (!toV2 && !toV1)
return 0;
- }
/* convert from v1 to v2. what does this mean?
* 1) change FILEI into FILEDATESI
/* bail if we can't get a lock */
if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0, 0) < 0)
goto bail_err;
-
- if ((fd = open(path, O_RDWR)) < 0)
- goto bail_lock;
+
+ /* we reuse fd from the resource fork */
+ fd = ad->ad_hf.adf_fd;
if (ad->ad_eid[ADEID_RFORK].ade_off) {
shiftdata = ADEDOFF_RFORK_V2 -ad->ad_eid[ADEID_RFORK].ade_off;
shiftdata = ADEDOFF_RFORK_V2 -ADEDOFF_RFORK_V1; /* 136 */
}
- if (fstat(fd, &st) ||
- sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
- goto bail_open;
+ if (fstat(fd, &st)) {
+ goto bail_lock;
}
- if (st.st_size > 0x7fffffff) {
+
+ if (st.st_size > 0x7fffffff -shiftdata) {
LOG(log_debug, logtype_default, "ad_v1tov2: file too big.");
- goto bail_truncate;
+ errno = EIO;
+ goto bail_lock;
}
-
+
off = ad->ad_eid[ADEID_RFORK].ade_off;
if (off > st.st_size) {
LOG(log_error, logtype_default, "ad_v1tov2: invalid resource fork offset. (off: %u)", off);
errno = EIO;
- goto bail_truncate;
+ goto bail_lock;
}
if (ad->ad_eid[ADEID_RFORK].ade_len > st.st_size - off) {
LOG(log_error, logtype_default, "ad_v1tov2: invalid resource fork length. (rfork len: %u)", ad->ad_eid[ADEID_RFORK].ade_len);
errno = EIO;
- goto bail_truncate;
+ goto bail_lock;
}
- /* last place for failure. */
if ((void *) (buf = (char *)
mmap(NULL, st.st_size + shiftdata,
PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
MAP_FAILED) {
- goto bail_truncate;
+ goto bail_lock;
+ }
+
+ /* last place for failure. */
+
+ if (sys_ftruncate(fd, st.st_size + shiftdata) < 0) {
+ goto bail_lock;
}
/* move the RFORK. this assumes that the RFORK is at the end */
}
munmap(buf, st.st_size + shiftdata);
- close(fd);
/* now, fix up our copy of the header */
memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
ad->ad_eid[ADEID_FINDERI].ade_off = ADEDOFF_FINDERI_V2;
ad->ad_eid[ADEID_RFORK].ade_off = ADEDOFF_RFORK_V2;
- /* switch to v2 */
- ad->ad_version = AD_VERSION2;
+ /* switch to dest version */
+ ad->ad_version = (toV2)?AD_VERSION2:AD_VERSION1;
/* move our data buffer to make space for the new entries. */
memmove(ad->ad_data + ADEDOFF_NAME_V2, ad->ad_data + ADEDOFF_NAME_V1,
/* rebuild the header and cleanup */
ad_flush(ad, ADFLAGS_HF );
- ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
-
- return 0;
+ ret = 0;
-bail_truncate:
- sys_ftruncate(fd, st.st_size);
-bail_open:
- close(fd);
bail_lock:
ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0, 0);
bail_err:
- return -1;
+ return ret;
}
#endif /* AD_VERSION == AD_VERSION2 */
+/* --------------------------- */
#ifdef ATACC
mode_t ad_hf_mode (mode_t mode)
{
/* Read the adouble header in and parse it.*/
if ((ad_header_read( ad , &st) < 0)
#if AD_VERSION == AD_VERSION2
- || (ad_v1tov2(ad, ad_p) < 0) || (ad_update(ad, ad_p) < 0)
+ || (ad_convert(ad, ad_p) < 0) || (ad_update(ad, ad_p) < 0)
#endif /* AD_VERSION == AD_VERSION2 */
) {
int err = errno;
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