Solaris share reservation cross platform locking

[netatalk.git] / etc / afpd / fork.c

diff --git a/etc/afpd/fork.c b/etc/afpd/fork.c
index f0ccf0031d3058ddf6a51e32f258ddcc5fd5771c..2424a5e4e22823aaaa30bf3f1062de18901d82b8 100644 (file)
--- a/etc/afpd/fork.c
+++ b/etc/afpd/fork.c
@@ -25,6 +25,7 @@
 #include <atalk/bstradd.h>
 #include <atalk/globals.h>
 #include <atalk/netatalk_conf.h>
+#include <atalk/ea.h>
 
 #include "fork.h"
 #include "file.h"
@@ -64,10 +65,10 @@ static int getforkparams(const AFPObj *obj, struct ofork *ofork, uint16_t bitmap
     vol = ofork->of_vol;
     dir = dirlookup(vol, ofork->of_did);
 
-    if (NULL == (path.u_name = mtoupath(vol, of_name(ofork), dir->d_did, utf8_encoding(obj)))) {
+    if (NULL == (path.m_name = utompath(vol, of_name(ofork), dir->d_did, utf8_encoding(obj)))) {
         return( AFPERR_MISC );
     }
-    path.m_name = of_name(ofork);
+    path.u_name = of_name(ofork);
     path.id = 0;
     st = &path.st;
     if ( bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) |
@@ -151,6 +152,25 @@ static int fork_setmode(struct adouble *adp, int eid, int access, int ofrefnum)
     int denyreadset;
     int denywriteset;
 
+#ifdef HAVE_FSHARE_T
+    fshare_t shmd;
+
+    shmd.f_access = (access & OPENACC_RD ? F_RDACC : 0) | (access & OPENACC_WR ? F_WRACC : 0);
+    if (shmd.f_access == 0)
+        /* we must give an access mode, otherwise fcntl will complain */
+        shmd.f_access = F_RDACC;
+    shmd.f_deny = (access & OPENACC_DRD ? F_RDDNY : F_NODNY) | (access & OPENACC_DWR) ? F_WRDNY : 0;
+    shmd.f_id = ofrefnum;
+
+    int fd = (eid == ADEID_DFORK) ? ad_data_fileno(adp) : ad_reso_fileno(adp);
+
+    if (fd != -1 && fd != -2 && fcntl(fd, F_SHARE, &shmd) != 0) {
+        LOG(log_debug, logtype_afpd, "fork_setmode: fcntl: %s", strerror(errno));
+        errno = EACCES;
+        return -1;
+    }
+
+#endif
     if (! (access & (OPENACC_WR | OPENACC_RD | OPENACC_DWR | OPENACC_DRD))) {
         return ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, AD_FILELOCK_OPEN_NONE, 1, ofrefnum);
     }
@@ -573,6 +593,7 @@ int afp_setforkparams(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf _U_, s
             ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0) {
             goto afp_setfork_err;
         }
+
         err = ad_rtruncate(ofork->of_ad, size);
         if (st_size > size)
             ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
@@ -877,22 +898,22 @@ static int read_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, si
         /* due to the nature of afp packets, we have to exit if we get
            an error. we can't do this with translation on. */
 #ifdef WITH_SENDFILE
-        int fd;
-
-        fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
-
-        if (dsi_stream_read_file(dsi, fd, offset, dsi->datasize) < 0) {
-            if (errno == EINVAL || errno == ENOSYS)
-                goto afp_read_loop;
-            else {
-                LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s", of_name(ofork), strerror(errno));
-                goto afp_read_exit;
+        if (!(obj->options.flags & OPTION_NOSENDFILE)) {
+            int fd = ad_readfile_init(ofork->of_ad, eid, &offset, 0);
+            if (dsi_stream_read_file(dsi, fd, offset, dsi->datasize) < 0) { 
+               switch (errno) {
+                case EINVAL:
+                case ENOSYS:
+                    goto afp_read_loop;
+                default:
+                    LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s", of_name(ofork), strerror(errno));
+                    goto afp_read_exit;
+                }
             }
-        }
-
-        dsi_readdone(dsi);
-        goto afp_read_done;
 
+            dsi_readdone(dsi);
+            goto afp_read_done;
+        }
     afp_read_loop:
 #endif
 
@@ -1074,6 +1095,15 @@ int afp_closefork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U
     LOG(log_debug, logtype_afpd, "afp_closefork(fork: %s)",
         (ofork->of_flags & AFPFORK_DATA) ? "d" : "r");
 
+#ifdef HAVE_FSHARE_T
+    fshare_t shmd;
+    shmd.f_id = ofork->of_refnum;
+    if (AD_DATA_OPEN(ofork->of_ad))
+        fcntl(ad_data_fileno(ofork->of_ad), F_UNSHARE, &shmd);
+    if (AD_RSRC_OPEN(ofork->of_ad))
+        fcntl(ad_reso_fileno(ofork->of_ad), F_UNSHARE, &shmd);
+#endif
+
     if ( of_closefork( ofork ) < 0 ) {
         LOG(log_error, logtype_afpd, "afp_closefork(%s): of_closefork: %s", of_name(ofork), strerror(errno) );
         return( AFPERR_PARAM );
@@ -1206,29 +1236,27 @@ static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, s
     offset += cc;
 
 #if 0 /*def HAVE_SENDFILE_WRITE*/
-    if (!(obj->options.flags & OPTION_DEBUG)) {
-        if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket,
-                               offset, dsi->datasize)) < 0) {
-            switch (errno) {
-            case EDQUOT :
-            case EFBIG :
-            case ENOSPC :
-                cc = AFPERR_DFULL;
-                break;
-            default :
-                LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
-                goto afp_write_loop;
-            }
-            dsi_writeflush(dsi);
-            *rbuflen = 0;
-            ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
-                       reqcount,  ofork->of_refnum);
-            return cc;
+    if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket,
+                           offset, dsi->datasize)) < 0) {
+        switch (errno) {
+        case EDQUOT:
+        case EFBIG:
+        case ENOSPC:
+            cc = AFPERR_DFULL;
+            break;
+        default:
+            LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
+            goto afp_write_loop;
         }
-
-        offset += cc;
-        goto afp_write_done;
+        dsi_writeflush(dsi);
+        *rbuflen = 0;
+        ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
+                   reqcount,  ofork->of_refnum);
+        return cc;
     }
+
+    offset += cc;
+    goto afp_write_done;
 #endif /* 0, was HAVE_SENDFILE_WRITE */
 
     /* loop until everything gets written. currently