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nwatalk: use standalone mars_nwe AFP xattr backend

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This commit is contained in:
Mario Fetka
2026-05-31 04:13:31 +00:00
parent 8e95b56ca6
commit fa96ebb264
8 changed files with 51 additions and 201 deletions
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119
src/nwatalk.c
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@@ -1,4 +1,4 @@
/* Optional Netatalk/libatalk AFP metadata backend helpers. */
/* mars_nwe AFP xattr metadata backend helpers. */
#include "net.h"
#include "config.h"
#include "nwatalk.h"
@@ -11,11 +11,6 @@
#include <errno.h>
#endif
#if NETATALK_SUPPORT
#include <sys/stat.h>
#include <atalk/adouble.h>
#endif
#define MARS_NWE_AFP_ENTRY_ID_XATTR "org.mars-nwe.afp.entry-id"
#define MARS_NWE_AFP_FINDER_INFO_XATTR "org.mars-nwe.afp.finder-info"
#define MARS_NWE_AFP_ATTRIBUTES_XATTR "org.mars-nwe.afp.attributes"
@@ -40,6 +35,14 @@ typedef struct {
uint8 attributes[2];
} MARS_NWE_AFP_ATTRIBUTES_XATTR_DATA;
int nwatalk_backend_available(void)
{
#if XATTR_SUPPORT
return(1);
#else
return(0);
#endif
}
#if XATTR_SUPPORT
static int nwatalk_get_mars_entry_id_xattr(const char *path, uint32 *entry_id)
@@ -73,46 +76,12 @@ static int nwatalk_get_mars_entry_id_xattr(const char *path, uint32 *entry_id)
}
#endif
int nwatalk_backend_available(void)
{
#if NETATALK_SUPPORT
return(1);
#else
return(0);
#endif
}
#if NETATALK_SUPPORT
static int nwatalk_open_adouble(const char *path, struct adouble *ad)
{
int result;
if (!path || !*path) return(-0x9c); /* invalid path */
ad_init_old(ad, AD_VERSION, 0);
result = ad_open(ad, path,
ADFLAGS_HF | ADFLAGS_RF | ADFLAGS_RDONLY |
ADFLAGS_NOHF | ADFLAGS_NORF);
if (result < 0) {
return(-0x9c);
}
return(0);
}
#endif
int nwatalk_get_finder_info(const char *path, uint8 *finder_info,
int finder_info_len)
{
#if XATTR_SUPPORT
ssize_t len;
#endif
#if NETATALK_SUPPORT
struct adouble ad;
void *entry;
int result;
#endif
if (!finder_info || finder_info_len < NWATALK_FINDER_INFO_LEN) {
return(-0x9c);
@@ -128,23 +97,12 @@ int nwatalk_get_finder_info(const char *path, uint8 *finder_info,
return(0);
memset(finder_info, 0, finder_info_len);
}
#endif
#if NETATALK_SUPPORT
result = nwatalk_open_adouble(path, &ad);
if (result < 0) return(result);
entry = ad_entry(&ad, ADEID_FINDERI);
if (entry && ad_getentrylen(&ad, ADEID_FINDERI) >= NWATALK_FINDER_INFO_LEN) {
memcpy(finder_info, entry, NWATALK_FINDER_INFO_LEN);
}
ad_close(&ad, 0);
return(0);
#else
(void)path;
return(-0xbf); /* invalid namespace / backend unavailable */
#endif
/* Missing FinderInfo is a valid AFP state; absent metadata reads as zeroes. */
return(0);
}
int nwatalk_set_finder_info(const char *path, const uint8 *finder_info,
@@ -170,8 +128,6 @@ int nwatalk_set_finder_info(const char *path, const uint8 *finder_info,
#endif
}
int nwatalk_get_afp_attributes(const char *path, uint16 *attributes)
{
#if XATTR_SUPPORT
@@ -269,64 +225,17 @@ int nwatalk_set_entry_id(const char *path, uint32 entry_id)
int nwatalk_get_resource_fork_size(const char *path, uint32 *resource_size)
{
#if NETATALK_SUPPORT
struct adouble ad;
off_t size;
int result;
(void)path;
if (!resource_size) return(-0x9c);
*resource_size = 0;
result = nwatalk_open_adouble(path, &ad);
if (result < 0) return(result);
size = ad_size(&ad, ADEID_RFORK);
if (size > 0) {
if (size > 0xffffffffUL) size = 0xffffffffUL;
*resource_size = (uint32)size;
}
ad_close(&ad, 0);
return(0);
#else
(void)path;
(void)resource_size;
return(-0xbf); /* invalid namespace / backend unavailable */
#endif
}
int nwatalk_get_entry_id(const char *path, uint32 *entry_id)
{
int result;
if (!entry_id) return(-0x9c);
*entry_id = 0;
if (!path || !*path) return(-0x9c);
result = nwatalk_get_mars_entry_id_xattr(path, entry_id);
if (!result && *entry_id)
return(0);
#if NETATALK_SUPPORT
{
struct adouble ad;
struct stat stbuff;
uint32_t id;
if (stat(path, &stbuff)) return(-0x9c);
result = nwatalk_open_adouble(path, &ad);
if (result < 0) return(result);
id = ad_getid(&ad, stbuff.st_dev, stbuff.st_ino, 0, NULL);
if (id) *entry_id = (uint32)id;
ad_close(&ad, 0);
return(id ? 0 : -0x9c);
}
#else
(void)result;
return(-0xbf); /* invalid namespace / backend unavailable */
#endif
return(nwatalk_get_mars_entry_id_xattr(path, entry_id));
}