/*
+ * $Id: ofork.c,v 1.31 2010-02-10 14:05:37 franklahm Exp $
+ *
* Copyright (c) 1996 Regents of The University of Michigan.
* All Rights Reserved. See COPYRIGHT.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
+#endif /* HAVE_CONFIG_H */
#include <stdio.h>
#include <stdlib.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
#include <string.h>
#include <sys/stat.h> /* works around a bug */
#include <sys/param.h>
-#include <syslog.h>
+#include <atalk/logger.h>
+#include <errno.h>
-#include <atalk/adouble.h>
+#include <atalk/util.h>
#include "globals.h"
#include "volume.h"
#include "directory.h"
#include "fork.h"
-/* we need to have a hashed list of oforks (by name). just hash
+/* we need to have a hashed list of oforks (by dev inode). just hash
* by first letter. */
#define OFORK_HASHSIZE 64
static struct ofork *ofork_table[OFORK_HASHSIZE];
/* OR some of each character for the hash*/
-static __inline__ unsigned long hashfn(const char *name)
+static unsigned long hashfn(const struct file_key *key)
{
- unsigned long i = 0;
-
- while (*name) {
- i = ((i << 4) | (8*sizeof(i) - 4)) ^ *name++;
- }
- return i & (OFORK_HASHSIZE - 1);
+#if 0
+ unsigned long i = 0;
+ while (*name) {
+ i = ((i << 4) | (8*sizeof(i) - 4)) ^ *name++;
+ }
+#endif
+ return key->inode & (OFORK_HASHSIZE - 1);
}
-static __inline__ void of_hash(struct ofork *of)
+static void of_hash(struct ofork *of)
{
- struct ofork **table;
+ struct ofork **table;
- table = &ofork_table[hashfn(of->of_name)];
- if ((of->next = *table) != NULL)
- (*table)->prevp = &of->next;
- *table = of;
- of->prevp = table;
+ table = &ofork_table[hashfn(&of->key)];
+ if ((of->next = *table) != NULL)
+ (*table)->prevp = &of->next;
+ *table = of;
+ of->prevp = table;
}
-static __inline__ void of_unhash(struct ofork *of)
+static void of_unhash(struct ofork *of)
{
- if (of->prevp) {
- if (of->next)
- of->next->prevp = of->prevp;
- *(of->prevp) = of->next;
- }
+ if (of->prevp) {
+ if (of->next)
+ of->next->prevp = of->prevp;
+ *(of->prevp) = of->next;
+ }
}
-void of_pforkdesc( f )
- FILE *f;
+#ifdef DEBUG1
+void of_pforkdesc( FILE *f)
{
- u_short ofrefnum;
+ int ofrefnum;
if (!oforks)
- return;
+ return;
for ( ofrefnum = 0; ofrefnum < nforks; ofrefnum++ ) {
- if ( oforks[ ofrefnum ] != NULL ) {
- fprintf( f, "%hu <%s>\n", ofrefnum, oforks[ ofrefnum ]->of_name);
- }
+ if ( oforks[ ofrefnum ] != NULL ) {
+ fprintf( f, "%hu <%s>\n", ofrefnum, of_name(oforks[ ofrefnum ]));
+ }
}
}
+#endif
int of_flush(const struct vol *vol)
{
- u_int16_t refnum;
+ int refnum;
if (!oforks)
- return 0;
+ return 0;
for ( refnum = 0; refnum < nforks; refnum++ ) {
- if (oforks[ refnum ] != NULL && (oforks[refnum]->of_vol == vol) &&
- flushfork( oforks[ refnum ] ) < 0 ) {
- syslog( LOG_ERR, "of_flush: %m" );
- }
+ if (oforks[ refnum ] != NULL && (oforks[refnum]->of_vol == vol) &&
+ flushfork( oforks[ refnum ] ) < 0 ) {
+ LOG(log_error, logtype_afpd, "of_flush: %s", strerror(errno) );
+ }
}
return( 0 );
}
-
-int of_rename(vol, olddir, oldpath, newdir, newpath)
- const struct vol *vol;
- struct dir *olddir, *newdir;
- const char *oldpath, *newpath;
+int of_rename(
+ const struct vol *vol,
+ struct ofork *s_of,
+ struct dir *olddir, const char *oldpath _U_,
+ struct dir *newdir, const char *newpath)
{
- struct ofork *of, *next, *d_ofork;
-
- next = ofork_table[hashfn(oldpath)];
- while ((of = next)) {
- next = next->next; /* so we can unhash and still be all right. */
-
- if ((vol == of->of_vol) && (olddir == of->of_dir) &&
- (strcmp(of->of_name, oldpath) == 0)) {
- of_unhash(of);
- strncpy( of->of_name, newpath, of->of_namelen);
- of->of_d_prev->of_d_next = of->of_d_prev;
- of->of_d_next->of_d_prev = of->of_d_next;
- of->of_dir = newdir;
- if (!(d_ofork = newdir->d_ofork)) {
- newdir->d_ofork = of;
- of->of_d_next = of->of_d_prev = of;
- } else {
- of->of_d_next = d_ofork;
- of->of_d_prev = d_ofork->of_d_prev;
- of->of_d_prev->of_d_next = of;
- d_ofork->of_d_prev = of;
- }
- of_hash(of);
+ struct ofork *of, *next, *d_ofork;
+ int done = 0;
+
+ if (!s_of)
+ return AFP_OK;
+
+ next = ofork_table[hashfn(&s_of->key)];
+ while ((of = next)) {
+ next = next->next; /* so we can unhash and still be all right. */
+
+ if (vol == of->of_vol && olddir == of->of_dir &&
+ s_of->key.dev == of->key.dev &&
+ s_of->key.inode == of->key.inode ) {
+ if (!done) {
+ strlcpy( of_name(of), newpath, of->of_ad->ad_m_namelen);
+ done = 1;
+ }
+ if (newdir != olddir) {
+ of->of_d_prev->of_d_next = of->of_d_next;
+ of->of_d_next->of_d_prev = of->of_d_prev;
+ if (of->of_dir->d_ofork == of) {
+ of->of_dir->d_ofork = (of == of->of_d_next) ? NULL : of->of_d_next;
+ }
+ of->of_dir = newdir;
+ if (!(d_ofork = newdir->d_ofork)) {
+ newdir->d_ofork = of;
+ of->of_d_next = of->of_d_prev = of;
+ } else {
+ of->of_d_next = d_ofork;
+ of->of_d_prev = d_ofork->of_d_prev;
+ of->of_d_prev->of_d_next = of;
+ d_ofork->of_d_prev = of;
+ }
+ }
+ }
}
- }
- return AFP_OK;
+ return AFP_OK;
}
- struct ofork *
-of_alloc(vol, dir, path, ofrefnum, eid, ad)
- struct vol *vol;
- struct dir *dir;
- char *path;
- u_int16_t *ofrefnum;
- const int eid;
- struct adouble *ad;
+#define min(a,b) ((a)<(b)?(a):(b))
+
+struct ofork *
+of_alloc(struct vol *vol,
+ struct dir *dir,
+ char *path,
+ u_int16_t *ofrefnum,
+ const int eid,
+ struct adouble *ad,
+ struct stat *st)
{
struct ofork *of, *d_ofork;
u_int16_t refnum, of_refnum;
int i;
if (!oforks) {
- nforks = (getdtablesize() - 10) / 2;
- oforks = (struct ofork **) calloc(nforks, sizeof(struct ofork *));
- if (!oforks)
- return NULL;
+ nforks = getdtablesize() - 10;
+ /* protect against insane ulimit -n */
+ nforks = min(nforks, 0xffff);
+ oforks = (struct ofork **) calloc(nforks, sizeof(struct ofork *));
+ if (!oforks)
+ return NULL;
}
- for ( refnum = lastrefnum++, i = 0; i < nforks; i++, refnum++ ) {
- if ( oforks[ refnum % nforks ] == NULL ) {
- break;
- }
+ for ( refnum = ++lastrefnum, i = 0; i < nforks; i++, refnum++ ) {
+ /* cf AFP3.0.pdf, File fork page 40 */
+ if (!refnum)
+ refnum++;
+ if ( oforks[ refnum % nforks ] == NULL ) {
+ break;
+ }
}
+ /* grr, Apple and their 'uniquely identifies'
+ the next line is a protection against
+ of_alloc()
+ refnum % nforks = 3
+ lastrefnum = 3
+ oforks[3] != NULL
+ refnum = 4
+ oforks[4] == NULL
+ return 4
+
+ close(oforks[4])
+
+ of_alloc()
+ refnum % nforks = 4
+ ...
+ return 4
+ same if lastrefnum++ rather than ++lastrefnum.
+ */
+ lastrefnum = refnum;
if ( i == nforks ) {
- syslog(LOG_ERR, "of_alloc: maximum number of forks exceeded.");
- return( NULL );
+ LOG(log_error, logtype_afpd, "of_alloc: maximum number of forks exceeded.");
+ return( NULL );
}
of_refnum = refnum % nforks;
if (( oforks[ of_refnum ] =
- (struct ofork *)malloc( sizeof( struct ofork ))) == NULL ) {
- syslog( LOG_ERR, "of_alloc: malloc: %m" );
- return NULL;
+ (struct ofork *)malloc( sizeof( struct ofork ))) == NULL ) {
+ LOG(log_error, logtype_afpd, "of_alloc: malloc: %s", strerror(errno) );
+ return NULL;
}
of = oforks[of_refnum];
/* see if we need to allocate space for the adouble struct */
- if ((of->of_ad = ad ? ad :
- calloc(1, sizeof(struct adouble))) == NULL) {
- syslog( LOG_ERR, "of_alloc: malloc: %m" );
- return NULL;
+ if (!ad) {
+ ad = malloc( sizeof( struct adouble ) );
+ if (!ad) {
+ LOG(log_error, logtype_afpd, "of_alloc: malloc: %s", strerror(errno) );
+ free(of);
+ oforks[ of_refnum ] = NULL;
+ return NULL;
+ }
+
+ /* initialize to zero. This is important to ensure that
+ ad_open really does reinitialize the structure. */
+ ad_init(ad, vol->v_adouble, vol->v_ad_options);
+
+ ad->ad_m_namelen = 255 +1;
+ /* here's the deal: we allocate enough for the standard mac file length.
+ * in the future, we'll reallocate in fairly large jumps in case
+ * of long unicode names */
+ if (( ad->ad_m_name =(char *)malloc( ad->ad_m_namelen )) == NULL ) {
+ LOG(log_error, logtype_afpd, "of_alloc: malloc: %s", strerror(errno) );
+ free(ad);
+ free(of);
+ oforks[ of_refnum ] = NULL;
+ return NULL;
+ }
+ strlcpy( ad->ad_m_name, path, ad->ad_m_namelen);
+ } else {
+ /* Increase the refcount on this struct adouble. This is
+ decremented again in oforc_dealloc. */
+ ad->ad_refcount++;
}
+ of->of_ad = ad;
of->of_vol = vol;
of->of_dir = dir;
if (!(d_ofork = dir->d_ofork)) {
- dir->d_ofork = of;
- of->of_d_next = of->of_d_prev = of;
+ dir->d_ofork = of;
+ of->of_d_next = of->of_d_prev = of;
} else {
- of->of_d_next = d_ofork;
- of->of_d_prev = d_ofork->of_d_prev;
- d_ofork->of_d_prev->of_d_next = of;
- d_ofork->of_d_prev = of;
+ of->of_d_next = d_ofork;
+ of->of_d_prev = d_ofork->of_d_prev;
+ d_ofork->of_d_prev->of_d_next = of;
+ d_ofork->of_d_prev = of;
}
- /* here's the deal: we allocate enough for the standard mac file length.
- * in the future, we'll reallocate in fairly large jumps in case
- * of long unicode names */
- if (( of->of_name =(char *)malloc(MACFILELEN + 1)) ==
- NULL ) {
- syslog( LOG_ERR, "of_alloc: malloc: %m" );
- if (!ad)
- free(of->of_ad);
- free(of);
- oforks[ of_refnum ] = NULL;
- return NULL;
- }
- strncpy( of->of_name, path, of->of_namelen = MACFILELEN + 1);
*ofrefnum = refnum;
- of->of_refnum = of_refnum;
- of_hash(of);
-
+ of->of_refnum = refnum;
+ of->key.dev = st->st_dev;
+ of->key.inode = st->st_ino;
if (eid == ADEID_DFORK)
- of->of_flags = AFPFORK_DATA;
+ of->of_flags = AFPFORK_DATA;
else
- of->of_flags = AFPFORK_RSRC;
+ of->of_flags = AFPFORK_RSRC;
+ of_hash(of);
return( of );
}
struct ofork *of_find(const u_int16_t ofrefnum )
{
- if (!oforks)
- return NULL;
+ if (!oforks || !nforks)
+ return NULL;
return( oforks[ ofrefnum % nforks ] );
}
+/* -------------------------- */
+int of_stat (struct path *path)
+{
+int ret;
+ path->st_errno = 0;
+ path->st_valid = 1;
+ if ((ret = lstat(path->u_name, &path->st)) < 0)
+ path->st_errno = errno;
+ return ret;
+}
+
+/* --------------------------
+ stat the current directory.
+ stat(".") works even if "." is deleted thus
+ we have to stat ../name because we want to know if it's there
+*/
+int of_statdir (struct vol *vol, struct path *path)
+{
+static char pathname[ MAXPATHLEN + 1] = "../";
+int ret;
+
+ if (*path->m_name) {
+ /* not curdir */
+ return of_stat (path);
+ }
+ path->st_errno = 0;
+ path->st_valid = 1;
+ /* FIXME, what about: we don't have r-x perm anymore ? */
+ strlcpy(pathname +3, path->d_dir->d_u_name, sizeof (pathname) -3);
+
+ if (!(ret = lstat(pathname, &path->st)))
+ return 0;
+
+ path->st_errno = errno;
+ /* hmm, can't stat curdir anymore */
+ if (errno == EACCES && curdir->d_parent ) {
+ if (movecwd(vol, curdir->d_parent))
+ return -1;
+ path->st_errno = 0;
+ if ((ret = lstat(path->d_dir->d_u_name, &path->st)) < 0)
+ path->st_errno = errno;
+ }
+ return ret;
+}
+
+/* -------------------------- */
struct ofork *
-of_findname(const struct vol *vol, const struct dir *dir, const char *name)
+ of_findname(struct path *path)
{
struct ofork *of;
+ struct file_key key;
+
+ if (!path->st_valid) {
+ of_stat(path);
+ }
+
+ if (path->st_errno)
+ return NULL;
+
+ key.dev = path->st.st_dev;
+ key.inode = path->st.st_ino;
- for (of = ofork_table[hashfn(name)]; of; of = of->next) {
- if ((vol == of->of_vol) && (dir == of->of_dir) &&
- (strcmp(of->of_name, name) == 0))
- return of;
+ for (of = ofork_table[hashfn(&key)]; of; of = of->next) {
+ if (key.dev == of->key.dev && key.inode == of->key.inode ) {
+ return of;
+ }
}
return NULL;
}
-
-void of_dealloc( of )
- struct ofork *of;
+void of_dealloc( struct ofork *of)
{
if (!oforks)
- return;
+ return;
of_unhash(of);
of->of_d_prev->of_d_next = of->of_d_next;
of->of_d_next->of_d_prev = of->of_d_prev;
if (of->of_dir->d_ofork == of) {
- of->of_dir->d_ofork = (of == of->of_d_next) ? NULL : of->of_d_next;
+ of->of_dir->d_ofork = (of == of->of_d_next) ? NULL : of->of_d_next;
}
- oforks[ of->of_refnum ] = NULL;
- free( of->of_name );
- /* free of_ad */
- if ((of->of_ad->ad_hf.adf_fd == -1) &&
- (of->of_ad->ad_df.adf_fd == -1)) {
- free( of->of_ad);
+ oforks[ of->of_refnum % nforks ] = NULL;
+
+ /* decrease refcount */
+ of->of_ad->ad_refcount--;
+
+ if ( of->of_ad->ad_refcount <= 0) {
+ free( of->of_ad->ad_m_name );
+ free( of->of_ad);
} else {/* someone's still using it. just free this user's locks */
- ad_unlock(of->of_ad, of->of_refnum);
+ ad_unlock(of->of_ad, of->of_refnum);
}
free( of );
}
+
+/* --------------------------- */
+int of_closefork(struct ofork *ofork)
+{
+ struct timeval tv;
+ int adflags, doflush = 0;
+ int ret;
+
+ adflags = 0;
+ if ((ofork->of_flags & AFPFORK_DATA) && (ad_data_fileno( ofork->of_ad ) != -1)) {
+ adflags |= ADFLAGS_DF;
+ }
+ if ( (ofork->of_flags & AFPFORK_OPEN) && ad_reso_fileno( ofork->of_ad ) != -1 ) {
+ adflags |= ADFLAGS_HF;
+ /*
+ * Only set the rfork's length if we're closing the rfork.
+ */
+ if ((ofork->of_flags & AFPFORK_RSRC)) {
+ ad_refresh( ofork->of_ad );
+ if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
+ ad_setdate(ofork->of_ad, AD_DATE_MODIFY | AD_DATE_UNIX,tv.tv_sec);
+ doflush++;
+ }
+ if ( doflush ) {
+ ad_flush( ofork->of_ad );
+ }
+ }
+ }
+ ret = 0;
+ if ( ad_close( ofork->of_ad, adflags ) < 0 ) {
+ ret = -1;
+ }
+
+ of_dealloc( ofork );
+ return ret;
+}
+
+/* ----------------------
+
+*/
+struct adouble *of_ad(const struct vol *vol, struct path *path, struct adouble *ad)
+{
+ struct ofork *of;
+ struct adouble *adp;
+
+ if ((of = of_findname(path))) {
+ adp = of->of_ad;
+ } else {
+ ad_init(ad, vol->v_adouble, vol->v_ad_options);
+ adp = ad;
+ }
+ return adp;
+}
+
+/* ----------------------
+ close all forks for a volume
+*/
+void of_closevol(const struct vol *vol)
+{
+ int refnum;
+
+ if (!oforks)
+ return;
+
+ for ( refnum = 0; refnum < nforks; refnum++ ) {
+ if (oforks[ refnum ] != NULL && oforks[refnum]->of_vol == vol) {
+ if (of_closefork( oforks[ refnum ]) < 0 ) {
+ LOG(log_error, logtype_afpd, "of_closevol: %s", strerror(errno) );
+ }
+ }
+ }
+ return;
+}
+
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