/*
- * $Id: ad_open.c,v 1.25 2003-01-12 14:40:04 didg Exp $
- *
* Copyright (c) 1999 Adrian Sun (asun@u.washington.edu)
* Copyright (c) 1990,1991 Regents of The University of Michigan.
+ * Copyright (c) 2010 Frank Lahm
+ *
* All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software and
* permission. This software is supplied as is without expressed or
* implied warranties of any kind.
*
- * Research Systems Unix Group
- * The University of Michigan
- * c/o Mike Clark
- * 535 W. William Street
- * Ann Arbor, Michigan
- * +1-313-763-0525
- * netatalk@itd.umich.edu
+ * Research Systems Unix Group
+ * The University of Michigan
+ * c/o Mike Clark
+ * 535 W. William Street
+ * Ann Arbor, Michigan
+ * +1-313-763-0525
+ * netatalk@itd.umich.edu
+ *
+ */
+
+/*!
+ * @file
+ * Part of Netatalk's AppleDouble implementatation
+ * @note We don't use inlines because a good compiler should be
+ * able to optimize all the static funcs below.
+ * @sa include/atalk/adouble.h
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
-#include <string.h>
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif /* HAVE_FCNTL_H */
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif /* HAVE_UNISTD_H */
#include <errno.h>
-#include <atalk/logger.h>
-
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
#include <sys/param.h>
-#include <sys/mman.h>
+#include <stdlib.h>
+#include <string.h>
-#include <netatalk/endian.h>
+#include <atalk/logger.h>
#include <atalk/adouble.h>
+#include <atalk/util.h>
+#include <atalk/ea.h>
#include "ad_private.h"
#define MAX(a, b) ((a) < (b) ? (b) : (a))
#endif /* ! MAX */
+#ifdef HAVE_PREAD
+# define AD_SET(a)
+#else
+# define AD_SET(a) a = 0
+#endif
+
/*
* AppleDouble entry default offsets.
* The layout looks like this:
*
* this is the v1 layout:
- * 255 200 16 32 N
- * | NAME | COMMENT | FILEI | FINDERI | RFORK |
+ * 255 200 16 32 N
+ * | NAME | COMMENT | FILEI | FINDERI | RFORK |
*
* we need to change it to look like this:
*
* NAME 255
* COMMENT 200
* FILEDATESI 16 replaces FILEI
- * FINDERI 32
+ * FINDERI 32
* DID 4 new
* AFPFILEI 4 new
* SHORTNAME 12 8.3 new
* RFORK N
- *
+ *
* so, all we need to do is replace FILEI with FILEDATESI, move RFORK,
* and add in the new fields.
- *
- * NOTE: the HFS module will need similar modifications to interact with
- * afpd correctly.
*/
-
+
#define ADEDOFF_MAGIC (0)
#define ADEDOFF_VERSION (ADEDOFF_MAGIC + ADEDLEN_MAGIC)
#define ADEDOFF_FILLER (ADEDOFF_VERSION + ADEDLEN_VERSION)
#undef ADEDOFF_FILEI
#endif /* ADEDOFF_FILEI */
-#define ADEID_NUM_V1 5
-#define ADEDOFF_NAME_V1 (AD_HEADER_LEN + ADEID_NUM_V1*AD_ENTRY_LEN)
-#define ADEDOFF_COMMENT_V1 (ADEDOFF_NAME_V1 + ADEDLEN_NAME)
-#define ADEDOFF_FILEI (ADEDOFF_COMMENT_V1 + ADEDLEN_COMMENT)
-#define ADEDOFF_FINDERI_V1 (ADEDOFF_FILEI + ADEDLEN_FILEI)
-#define ADEDOFF_RFORK_V1 (ADEDOFF_FINDERI_V1 + ADEDLEN_FINDERI)
-
-/* i stick things in a slightly different order than their eid order in
- * case i ever want to separate RootInfo behaviour from the rest of the
+/* i stick things in a slightly different order than their eid order in
+ * case i ever want to separate RootInfo behaviour from the rest of the
* stuff. */
-#define ADEID_NUM_V2 9
+
+/* ad:v2 */
#define ADEDOFF_NAME_V2 (AD_HEADER_LEN + ADEID_NUM_V2*AD_ENTRY_LEN)
#define ADEDOFF_COMMENT_V2 (ADEDOFF_NAME_V2 + ADEDLEN_NAME)
#define ADEDOFF_FILEDATESI (ADEDOFF_COMMENT_V2 + ADEDLEN_COMMENT)
#define ADEDOFF_FINDERI_V2 (ADEDOFF_FILEDATESI + ADEDLEN_FILEDATESI)
-#define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
+#define ADEDOFF_DID (ADEDOFF_FINDERI_V2 + ADEDLEN_FINDERI)
#define ADEDOFF_AFPFILEI (ADEDOFF_DID + ADEDLEN_DID)
#define ADEDOFF_SHORTNAME (ADEDOFF_AFPFILEI + ADEDLEN_AFPFILEI)
#define ADEDOFF_PRODOSFILEI (ADEDOFF_SHORTNAME + ADEDLEN_SHORTNAME)
-#define ADEDOFF_RFORK_V2 (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
-
+#define ADEDOFF_PRIVDEV (ADEDOFF_PRODOSFILEI + ADEDLEN_PRODOSFILEI)
+#define ADEDOFF_PRIVINO (ADEDOFF_PRIVDEV + ADEDLEN_PRIVDEV)
+#define ADEDOFF_PRIVSYN (ADEDOFF_PRIVINO + ADEDLEN_PRIVINO)
+#define ADEDOFF_PRIVID (ADEDOFF_PRIVSYN + ADEDLEN_PRIVSYN)
+#define ADEDOFF_RFORK_V2 (ADEDOFF_PRIVID + ADEDLEN_PRIVID)
+
+/* ad:ea */
+#define ADEDOFF_FINDERI_EA (AD_HEADER_LEN + ADEID_NUM_EA * AD_ENTRY_LEN)
+#define ADEDOFF_COMMENT_EA (ADEDOFF_FINDERI_EA + ADEDLEN_FINDERI)
+#define ADEDOFF_FILEDATESI_EA (ADEDOFF_COMMENT_EA + ADEDLEN_COMMENT)
+#define ADEDOFF_AFPFILEI_EA (ADEDOFF_FILEDATESI_EA + ADEDLEN_FILEDATESI)
+/* this is to prevent changing timezones from causing problems with
+ localtime volumes. the screw-up is 30 years. we use a delta of 5 years */
+#define TIMEWARP_DELTA 157680000
-/* we keep local copies of a bunch of stuff so that we can initialize things
- * correctly. */
+struct entry {
+ uint32_t id, offset, len;
+};
-/* Bits in the finderinfo data.
- * see etc/afpd/{directory.c,file.c} for the finderinfo structure
- * layout. */
-#define FINDERINFO_CUSTOMICON 0x4
-#define FINDERINFO_CLOSEDVIEW 0x100
+/* --------------------------- */
+static uid_t default_uid = -1;
-/* offsets in finderinfo */
-#define FINDERINFO_FRTYPEOFF 0
-#define FINDERINFO_FRCREATOFF 4
-#define FINDERINFO_FRFLAGOFF 8
-#define FINDERINFO_FRVIEWOFF 14
+/* Forward declarations */
+static int ad_mkrf(char *path);
+static int ad_header_read(struct adouble *ad, struct stat *hst);
+static int ad_header_upgrade(struct adouble *ad, char *name);
-/* invisible bit for dot files */
-#define ATTRBIT_INVISIBLE (1 << 0)
-#define FINDERINFO_INVISIBLE (1 << 14)
+static int ad_mkrf_ea(char *path);
+static int ad_header_read_ea(struct adouble *ad, struct stat *hst);
+static int ad_header_upgrade_ea(struct adouble *ad, char *name);
-/* this is to prevent changing timezones from causing problems with
- localtime volumes. the screw-up is 30 years. we use a delta of 5
- years. */
-#define TIMEWARP_DELTA 157680000
+static struct adouble_fops ad_adouble = {
+ &ad_path,
+ &ad_mkrf,
+ &ad_rebuild_adouble_header,
+ &ad_header_read,
+ &ad_header_upgrade,
+};
+static struct adouble_fops ad_adouble_ea = {
+ &ad_path_ea,
+ &ad_mkrf_ea,
+ &ad_rebuild_adouble_header,
+ &ad_header_read_ea,
+ &ad_header_upgrade_ea,
+};
-struct entry {
- u_int32_t id, offset, len;
+static const struct entry entry_order2[ADEID_NUM_V2 + 1] = {
+ {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
+ {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
+ {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
+ {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
+ {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
+ {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
+ {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
+ {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
+ {ADEID_PRIVDEV, ADEDOFF_PRIVDEV, ADEDLEN_INIT},
+ {ADEID_PRIVINO, ADEDOFF_PRIVINO, ADEDLEN_INIT},
+ {ADEID_PRIVSYN, ADEDOFF_PRIVSYN, ADEDLEN_INIT},
+ {ADEID_PRIVID, ADEDOFF_PRIVID, ADEDLEN_INIT},
+ {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
+ {0, 0, 0}
};
-#if AD_VERSION == AD_VERSION1
-static const struct entry entry_order[] = {
- {ADEID_NAME, ADEDOFF_NAME_V1, ADEDLEN_INIT},
- {ADEID_COMMENT, ADEDOFF_COMMENT_V1, ADEDLEN_INIT},
- {ADEID_FILEI, ADEDOFF_FILEI, ADEDLEN_FILEI},
- {ADEID_FINDERI, ADEDOFF_FINDERI_V1, ADEDLEN_FINDERI},
- {ADEID_RFORK, ADEDOFF_RFORK_V1, ADEDLEN_INIT},
- {0, 0, 0}
+/* Using Extended Attributes */
+static const struct entry entry_order_ea[ADEID_NUM_EA + 1] = {
+ {ADEID_FINDERI, ADEDOFF_FINDERI_EA, ADEDLEN_FINDERI},
+ {ADEID_COMMENT, ADEDOFF_COMMENT_EA, ADEDLEN_INIT},
+ {ADEID_FILEDATESI, ADEDOFF_FILEDATESI_EA, ADEDLEN_FILEDATESI},
+ {ADEID_AFPFILEI, ADEDOFF_AFPFILEI_EA, ADEDLEN_AFPFILEI},
+ {0, 0, 0}
};
-#else /* AD_VERSION == AD_VERSION2 */
-static const struct entry entry_order[] = {
- {ADEID_NAME, ADEDOFF_NAME_V2, ADEDLEN_INIT},
- {ADEID_COMMENT, ADEDOFF_COMMENT_V2, ADEDLEN_INIT},
- {ADEID_FILEDATESI, ADEDOFF_FILEDATESI, ADEDLEN_FILEDATESI},
- {ADEID_FINDERI, ADEDOFF_FINDERI_V2, ADEDLEN_FINDERI},
- {ADEID_DID, ADEDOFF_DID, ADEDLEN_DID},
- {ADEID_AFPFILEI, ADEDOFF_AFPFILEI, ADEDLEN_AFPFILEI},
- {ADEID_SHORTNAME, ADEDOFF_SHORTNAME, ADEDLEN_INIT},
- {ADEID_PRODOSFILEI, ADEDOFF_PRODOSFILEI, ADEDLEN_PRODOSFILEI},
- {ADEID_RFORK, ADEDOFF_RFORK_V2, ADEDLEN_INIT},
- {0, 0, 0}
+
+uint32_t adv2_disk_eid[] = {
+ 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
+ AD_DEV, AD_INO, AD_SYN, AD_ID
};
-#endif /* AD_VERSION == AD_VERSION2 */
-#if AD_VERSION == AD_VERSION2
+/* ----------------------------------- */
+static int new_ad_header(const char *path, struct adouble *ad, int adflags)
+{
+ const struct entry *eid;
+ u_int16_t ashort;
+ struct stat st;
+ ad->ad_magic = AD_MAGIC;
+ ad->ad_version = ad->ad_flags & 0x0f0000;
+ if (!ad->ad_version) {
+ ad->ad_version = AD_VERSION;
+ }
-static __inline__ int ad_v1tov2(struct adouble *ad, const char *path)
-{
- struct stat st;
- u_int16_t attr;
- char *buf;
- int fd, off;
-
- /* check to see if we should convert this header. */
- if (!path || (ad->ad_version != AD_VERSION1))
- return 0;
- /* convert from v1 to v2. what does this mean?
- * 1) change FILEI into FILEDATESI
- * 2) create space for SHORTNAME, AFPFILEI, DID, and PRODOSI
- * 3) move FILEI attributes into AFPFILEI
- * 4) initialize ACCESS field of FILEDATESI.
- *
- * so, we need 4*12 (entry ids) + 12 (shortname) + 4 (afpfilei) +
- * 4 (did) + 8 (prodosi) = 76 more bytes. */
-
-#define SHIFTDATA (AD_DATASZ2 - AD_DATASZ1)
-
- /* bail if we can't get a lock */
- if (ad_tmplock(ad, ADEID_RFORK, ADLOCK_WR, 0, 0) < 0)
- goto bail_err;
-
- if ((fd = open(path, O_RDWR)) < 0)
- goto bail_lock;
-
- if (fstat(fd, &st) ||
- ftruncate(fd, st.st_size + SHIFTDATA) < 0) {
- goto bail_open;
- }
-
- /* 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;
- }
-
- off = ad->ad_eid[ADEID_RFORK].ade_off;
-
- /* move the RFORK. this assumes that the RFORK is at the end */
- memmove(buf + off + SHIFTDATA, buf + off,
- ad->ad_eid[ADEID_RFORK].ade_len);
-
- /* now, fix up our copy of the header */
- memset(ad->ad_filler, 0, sizeof(ad->ad_filler));
-
- /* replace FILEI with FILEDATESI */
- ad_getattr(ad, &attr);
- ad->ad_eid[ADEID_FILEDATESI].ade_off = ADEDOFF_FILEDATESI;
- ad->ad_eid[ADEID_FILEDATESI].ade_len = ADEDLEN_FILEDATESI;
- ad->ad_eid[ADEID_FILEI].ade_off = 0;
- ad->ad_eid[ADEID_FILEI].ade_len = 0;
-
- /* add in the new entries */
- ad->ad_eid[ADEID_DID].ade_off = ADEDOFF_DID;
- ad->ad_eid[ADEID_DID].ade_len = ADEDLEN_DID;
- ad->ad_eid[ADEID_AFPFILEI].ade_off = ADEDOFF_AFPFILEI;
- ad->ad_eid[ADEID_AFPFILEI].ade_len = ADEDLEN_AFPFILEI;
- ad->ad_eid[ADEID_SHORTNAME].ade_off = ADEDOFF_SHORTNAME;
- ad->ad_eid[ADEID_SHORTNAME].ade_len = ADEDLEN_INIT;
- ad->ad_eid[ADEID_PRODOSFILEI].ade_off = ADEDOFF_PRODOSFILEI;
- ad->ad_eid[ADEID_PRODOSFILEI].ade_len = ADEDLEN_PRODOSFILEI;
-
- /* shift the old entries (NAME, COMMENT, FINDERI, RFORK) */
- ad->ad_eid[ADEID_NAME].ade_off = ADEDOFF_NAME_V2;
- ad->ad_eid[ADEID_COMMENT].ade_off = ADEDOFF_COMMENT_V2;
- 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;
-
- /* move our data buffer to make space for the new entries. */
- memmove(buf + ADEDOFF_NAME_V2, buf + ADEDOFF_NAME_V1,
- ADEDOFF_RFORK_V1 - ADEDOFF_NAME_V1);
-
- /* now, fill in the space with appropriate stuff. we're
- operating as a v2 file now. */
- ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
- memset(ad_entry(ad, ADEID_DID), 0, ADEDLEN_DID);
- memset(ad_entry(ad, ADEID_AFPFILEI), 0, ADEDLEN_AFPFILEI);
- ad_setattr(ad, attr);
- memset(ad_entry(ad, ADEID_SHORTNAME), 0, ADEDLEN_SHORTNAME);
- memset(ad_entry(ad, ADEID_PRODOSFILEI), 0, ADEDLEN_PRODOSFILEI);
-
- /* rebuild the header and cleanup */
- ad_rebuild_header(ad);
- munmap(buf, st.st_size + SHIFTDATA);
- close(fd);
- ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0);
-
- return 0;
-
-bail_truncate:
- ftruncate(fd, st.st_size);
-bail_open:
- close(fd);
-bail_lock:
- ad_tmplock(ad, ADEID_RFORK, ADLOCK_CLR, 0, 0);
-bail_err:
- return -1;
-}
-#endif /* AD_VERSION == AD_VERSION2 */
+ memset(ad->ad_data, 0, sizeof(ad->ad_data));
-#ifdef ATACC
-mode_t ad_hf_mode (mode_t mode)
-{
- /* fnctl lock need write access */
- if ((mode & S_IRUSR))
- mode |= S_IWUSR;
- if ((mode & S_IRGRP))
- mode |= S_IWGRP;
- if ((mode & S_IROTH))
- mode |= S_IWOTH;
- /* if write mode set add read mode */
- if ((mode & S_IWUSR))
- mode |= S_IRUSR;
- if ((mode & S_IWGRP))
- mode |= S_IRGRP;
- if ((mode & S_IWOTH))
- mode |= S_IROTH;
+ if (ad->ad_flags == AD_VERSION2)
+ eid = entry_order2;
+ else if (ad->ad_flags == AD_VERSION_EA)
+ eid = entry_order_ea;
+ else {
+ return -1;
+ }
- return mode;
-}
+ while (eid->id) {
+ ad->ad_eid[eid->id].ade_off = eid->offset;
+ ad->ad_eid[eid->id].ade_len = eid->len;
+ eid++;
+ }
-#endif
+ /* put something sane in the directory finderinfo */
+ if ((adflags & ADFLAGS_DIR)) {
+ /* set default view */
+ ashort = htons(FINDERINFO_CLOSEDVIEW);
+ memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF, &ashort, sizeof(ashort));
+ } else {
+ /* set default creator/type fields */
+ memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"\0\0\0\0", 4);
+ memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"\0\0\0\0", 4);
+ }
+
+ /* make things invisible */
+ if ((ad->ad_options & ADVOL_INVDOTS) && (*path == '.')) {
+ ashort = htons(ATTRBIT_INVISIBLE);
+ ad_setattr(ad, ashort);
+ ashort = htons(FINDERINFO_INVISIBLE);
+ memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF, &ashort, sizeof(ashort));
+ }
+
+ if (lstat(path, &st) < 0)
+ return -1;
+
+ /* put something sane in the date fields */
+ ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, st.st_mtime);
+ ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, st.st_mtime);
+ ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
+ ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
+ return 0;
+}
-/* -------------------------------------
- read in the entries
+/* -------------------------------------
+ read in the entries
*/
-static void parse_entries(struct adouble *ad, char *buf,
- u_int16_t nentries)
+static void parse_entries(struct adouble *ad, char *buf, uint16_t nentries)
{
- u_int32_t eid, len, off;
+ uint32_t eid, len, off;
+ int warning = 0;
/* now, read in the entry bits */
for (; nentries > 0; nentries-- ) {
- memcpy(&eid, buf, sizeof( eid ));
- eid = ntohl( eid );
- buf += sizeof( eid );
- memcpy(&off, buf, sizeof( off ));
- off = ntohl( off );
- buf += sizeof( off );
- memcpy(&len, buf, sizeof( len ));
- len = ntohl( len );
- buf += sizeof( len );
-
- if ( 0 < eid && eid < ADEID_MAX ) {
- ad->ad_eid[ eid ].ade_off = off;
- ad->ad_eid[ eid ].ade_len = len;
- } else {
- LOG(log_debug, logtype_default, "ad_refresh: nentries %hd eid %d\n",
- nentries, eid );
- }
+ memcpy(&eid, buf, sizeof( eid ));
+ eid = DISK_EID(ntohl( eid ));
+ buf += sizeof( eid );
+ memcpy(&off, buf, sizeof( off ));
+ off = ntohl( off );
+ buf += sizeof( off );
+ memcpy(&len, buf, sizeof( len ));
+ len = ntohl( len );
+ buf += sizeof( len );
+
+ if (eid && eid < ADEID_MAX && off < sizeof(ad->ad_data) &&
+ (off + len <= sizeof(ad->ad_data) || eid == ADEID_RFORK)) {
+ ad->ad_eid[ eid ].ade_off = off;
+ ad->ad_eid[ eid ].ade_len = len;
+ } else if (!warning) {
+ warning = 1;
+ LOG(log_warning, logtype_default, "parse_entries: bogus eid: %d", eid);
+ }
}
}
-
/* this reads enough of the header so that we can figure out all of
* the entry lengths and offsets. once that's done, we just read/mmap
* the rest of the header in.
u_int16_t nentries;
int len;
ssize_t header_len;
- static int warning = 0;
struct stat st;
/* read the header */
- if ((header_len = adf_pread( &ad->ad_hf, buf, sizeof(ad->ad_data), 0)) < 0) {
- return -1;
+ if ((header_len = adf_pread( ad->ad_md, buf, sizeof(ad->ad_data), 0)) < 0) {
+ return -1;
}
if (header_len < AD_HEADER_LEN) {
errno = EIO;
memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
- /* tag broken v1 headers. just assume they're all right.
- * we detect two cases: null magic/version
- * byte swapped magic/version
- * XXX: in the future, you'll need the v1compat flag.
- * (ad->ad_flags & ADFLAGS_V1COMPAT) */
- if (!ad->ad_magic && !ad->ad_version) {
- if (!warning) {
- LOG(log_debug, logtype_default, "notice: fixing up null v1 magic/version.");
- warning++;
- }
- ad->ad_magic = AD_MAGIC;
- ad->ad_version = AD_VERSION1;
-
- } else if (ad->ad_magic == AD_MAGIC && ad->ad_version == AD_VERSION1) {
- if (!warning) {
- LOG(log_debug, logtype_default, "notice: fixing up byte-swapped v1 magic/version.");
- warning++;
- }
-
- } else {
- ad->ad_magic = ntohl( ad->ad_magic );
- ad->ad_version = ntohl( ad->ad_version );
- }
-
- if ((ad->ad_magic != AD_MAGIC) || ((ad->ad_version != AD_VERSION1)
-#if AD_VERSION == AD_VERSION2
- && (ad->ad_version != AD_VERSION2)
-#endif /* AD_VERSION == AD_VERSION2 */
- )) {
- errno = EIO;
- LOG(log_debug, logtype_default, "ad_open: can't parse AppleDouble header.");
- return -1;
+ if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
+ LOG(log_error, logtype_default, "ad_open: can't parse AppleDouble header.");
+ errno = EIO;
+ return -1;
}
- memcpy(ad->ad_filler, buf + ADEDOFF_FILLER, sizeof( ad->ad_filler ));
memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
nentries = ntohs( nentries );
- /* read in all the entry headers. if we have more than the
+ /* read in all the entry headers. if we have more than the
* maximum, just hope that the rfork is specified early on. */
len = nentries*AD_ENTRY_LEN;
if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
- len = sizeof(ad->ad_data) - AD_HEADER_LEN;
+ len = sizeof(ad->ad_data) - AD_HEADER_LEN;
buf += AD_HEADER_LEN;
if (len > header_len - AD_HEADER_LEN) {
+ LOG(log_error, logtype_default, "ad_header_read: can't read entry info.");
errno = EIO;
- LOG(log_debug, logtype_default, "ad_header_read: can't read entry info.");
- return -1;
+ return -1;
}
/* figure out all of the entry offsets and lengths. if we aren't
* able to read a resource fork entry, bail. */
+ nentries = len / AD_ENTRY_LEN;
parse_entries(ad, buf, nentries);
if (!ad_getentryoff(ad, ADEID_RFORK)
- || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
- ) {
- LOG(log_debug, logtype_default, "ad_header_read: problem with rfork entry offset.");
- return -1;
+ || (ad_getentryoff(ad, ADEID_RFORK) > sizeof(ad->ad_data))
+ ) {
+ LOG(log_error, logtype_default, "ad_header_read: problem with rfork entry offset.");
+ errno = EIO;
+ return -1;
}
if (ad_getentryoff(ad, ADEID_RFORK) > header_len) {
- errno = EIO;
- LOG(log_debug, logtype_default, "ad_header_read: can't read in entries.");
- return -1;
+ LOG(log_error, logtype_default, "ad_header_read: can't read in entries.");
+ errno = EIO;
+ return -1;
}
-
+
if (hst == NULL) {
hst = &st;
- if (fstat(ad->ad_hf.adf_fd, &st) < 0) {
- return 1; /* fail silently */
- }
+ if (fstat(ad->ad_md->adf_fd, &st) < 0) {
+ return 1; /* fail silently */
+ }
}
ad->ad_rlen = hst->st_size - ad_getentryoff(ad, ADEID_RFORK);
- /* fix up broken dates */
- if (ad->ad_version == AD_VERSION1) {
- u_int32_t aint;
-
- /* check to see if the ad date is wrong. just see if we have
- * a modification date in the future. */
- if (((ad_getdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, &aint)) == 0) &&
- (aint > TIMEWARP_DELTA + hst->st_mtime)) {
- ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, aint - AD_DATE_DELTA);
- ad_getdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, &aint);
- ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, aint - AD_DATE_DELTA);
- ad_getdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, &aint);
- ad_setdate(ad, AD_DATE_BACKUP | AD_DATE_UNIX, aint - AD_DATE_DELTA);
- }
+ return 0;
+}
+
+static int ad_header_read_ea(struct adouble *ad, struct stat *hst _U_)
+{
+ uint16_t nentries;
+ int len;
+ ssize_t header_len;
+ char *buf = ad->ad_data;
+
+ /* read the header */
+ if ((header_len = sys_fgetxattr(ad->ad_md->adf_fd, AD_EA_META, ad->ad_data, AD_DATASZ_EA)) < 1) {
+ LOG(log_debug, logtype_default, "ad_header_read_ea: %s (%u)", strerror(errno), errno);
+ return -1;
+ }
+
+ if (header_len < AD_HEADER_LEN) {
+ LOG(log_error, logtype_default, "ad_header_read_ea: bogus AppleDouble header.");
+ errno = EIO;
+ return -1;
+ }
+
+ memcpy(&ad->ad_magic, buf, sizeof( ad->ad_magic ));
+ memcpy(&ad->ad_version, buf + ADEDOFF_VERSION, sizeof( ad->ad_version ));
+
+ ad->ad_magic = ntohl( ad->ad_magic );
+ ad->ad_version = ntohl( ad->ad_version );
+
+ if ((ad->ad_magic != AD_MAGIC) || (ad->ad_version != AD_VERSION2)) {
+ LOG(log_error, logtype_default, "ad_header_read_ea: wrong magic or version");
+ errno = EIO;
+ return -1;
+ }
+
+ memcpy(&nentries, buf + ADEDOFF_NENTRIES, sizeof( nentries ));
+ nentries = ntohs( nentries );
+
+ /* Protect against bogus nentries */
+ len = nentries * AD_ENTRY_LEN;
+ if (len + AD_HEADER_LEN > sizeof(ad->ad_data))
+ len = sizeof(ad->ad_data) - AD_HEADER_LEN;
+ if (len > header_len - AD_HEADER_LEN) {
+ LOG(log_error, logtype_default, "ad_header_read_ea: can't read entry info.");
+ errno = EIO;
+ return -1;
+ }
+ nentries = len / AD_ENTRY_LEN;
+
+ /* Now parse entries */
+ parse_entries(ad, buf + AD_HEADER_LEN, nentries);
+ return 0;
+}
+
+static int ad_mkrf(char *path)
+{
+ char *slash;
+ /*
+ * Probably .AppleDouble doesn't exist, try to mkdir it.
+ */
+ if (NULL == ( slash = strrchr( path, '/' )) ) {
+ return -1;
+ }
+ *slash = '\0';
+ errno = 0;
+ if ( ad_mkdir( path, 0777 ) < 0 ) {
+ return -1;
+ }
+ *slash = '/';
+ return 0;
+}
+
+static int ad_mkrf_ea(char *path _U_)
+{
+ AFP_PANIC("ad_mkrf_ea: dont use");
+ return 0;
+}
+
+/* ----------------
+ if we are root change path user/ group
+ It can be a native function for BSD cf. FAQ.Q10
+ path: pathname to chown
+ stbuf: parent directory inode
+
+ use fstat and fchown or lchown with linux?
+*/
+#define EMULATE_SUIDDIR
+
+static int ad_chown(const char *path, struct stat *stbuf)
+{
+ int ret = 0;
+#ifdef EMULATE_SUIDDIR
+ uid_t id;
+
+ if (default_uid != (uid_t)-1) {
+ /* we are root (admin) */
+ id = (default_uid)?default_uid:stbuf->st_uid;
+ ret = lchown( path, id, stbuf->st_gid );
+ }
+#endif
+ return ret;
+}
+
+#define DEFMASK 07700 /* be conservative */
+
+/* ----------------
+ return access right and inode of path parent directory
+*/
+static int ad_mode_st(const char *path, int *mode, struct stat *stbuf)
+{
+ if (*mode == 0) {
+ return -1;
+ }
+ if (ad_stat(path, stbuf) != 0) {
+ *mode &= DEFMASK;
+ return -1;
+ }
+ *mode &= stbuf->st_mode;
+ return 0;
+}
+
+/* ----------------- */
+static int ad_error(struct adouble *ad, int adflags)
+{
+ int err = errno;
+ if ((adflags & ADFLAGS_NOHF)) {
+ /* FIXME double check : set header offset ?*/
+ return 0;
+ }
+ if ((adflags & ADFLAGS_DF)) {
+ ad_close( ad, ADFLAGS_DF );
+ err = errno;
+ }
+ return -1 ;
+}
+
+/* --------------------------- */
+static int ad_header_upgrade(struct adouble *ad _U_, char *name _U_)
+{
+ return 0;
+}
+
+static int ad_header_upgrade_ea(struct adouble *ad _U_, char *name _U_)
+{
+ AFP_PANIC("ad_header_upgrade_ea: dont use");
+ return 0;
+}
+
+static int ad_open_df(const char *path, int adflags, int oflags, int mode, struct adouble *ad)
+{
+ struct stat st_dir;
+ int hoflags, admode;
+ int st_invalid = -1;
+
+ LOG(log_maxdebug, logtype_default, "ad_open_df(\"%s/%s\", adf: 0x%04x, of: 0x%04x)",
+ getcwdpath(), path, adflags, oflags);
+
+ if (ad_data_fileno(ad) == -1) {
+ hoflags = (oflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
+ admode = mode;
+ if ((oflags & O_CREAT)) {
+ st_invalid = ad_mode_st(path, &admode, &st_dir);
+ if ((ad->ad_options & ADVOL_UNIXPRIV)) {
+ admode = mode;
+ }
+ }
+
+ ad->ad_data_fork.adf_fd = open(path, hoflags | O_NOFOLLOW, 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 | O_NOFOLLOW, 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 == -1 )
+ return -1;
+
+ AD_SET(ad->ad_data_fork.adf_off);
+ ad->ad_data_fork.adf_flags = hoflags;
+ if (!st_invalid) {
+ /* just created, set owner if admin (root) */
+ ad_chown(path, &st_dir);
+ }
+ adf_lock_init(&ad->ad_data_fork);
+ } else {
+ /* the file is already open... but */
+ if ((oflags & ( O_RDWR | O_WRONLY))
+ /* we want write access */
+ && !(ad->ad_data_fork.adf_flags & ( O_RDWR | O_WRONLY))) {
+ /* and it was denied the first time */
+ errno = EACCES;
+ return -1;
+ }
+ /* FIXME
+ * for now ad_open is never called with O_TRUNC or O_EXCL if the file is
+ * already open. Should we check for it? ie
+ * O_EXCL --> error
+ * O_TRUNC --> truncate the fork.
+ * idem for ressource fork.
+ */
+ }
+ ad->ad_data_fork.adf_refcount++;
+
+ return 0;
+}
+
+static int ad_open_hf_v2(const char *path, int adflags, int oflags, int mode, struct adouble *ad)
+{
+ struct stat st_dir;
+ struct stat st_meta;
+ struct stat *pst = NULL;
+ char *ad_p;
+ int hoflags, admode;
+ int st_invalid = -1;
+
+ ad_p = ad->ad_ops->ad_path( path, adflags );
+
+ hoflags = oflags & ~(O_CREAT | O_EXCL);
+ if (!(adflags & ADFLAGS_RDONLY)) {
+ hoflags = (hoflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
+ }
+ ad->ad_md->adf_fd = open( ad_p, hoflags | O_NOFOLLOW, 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 | O_NOFOLLOW, 0 );
+ }
+ }
+
+ if ( ad->ad_md->adf_fd < 0 ) {
+ if (errno == ENOENT && (oflags & O_CREAT) ) {
+ /*
+ * We're expecting to create a new adouble header file here
+ * if ((oflags & O_CREAT) ==> (oflags & O_RDWR)
+ */
+ LOG(log_debug, logtype_default, "ad_open(\"%s/%s\"): creating adouble file",
+ getcwdpath(), ad_p);
+ admode = mode;
+ errno = 0;
+ st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
+ if ((ad->ad_options & ADVOL_UNIXPRIV)) {
+ admode = mode;
+ }
+ admode = ad_hf_mode(admode);
+ if ((errno == ENOENT)) {
+ if (ad->ad_ops->ad_mkrf( ad_p) < 0) {
+ return ad_error(ad, adflags);
+ }
+ admode = mode;
+ st_invalid = ad_mode_st(ad_p, &admode, &st_dir);
+ if ((ad->ad_options & ADVOL_UNIXPRIV)) {
+ admode = mode;
+ }
+ admode = ad_hf_mode(admode);
+ }
+ /* retry with O_CREAT */
+ ad->ad_md->adf_fd = open( ad_p, oflags,admode );
+ if ( ad->ad_md->adf_fd < 0 ) {
+ return ad_error(ad, adflags);
+ }
+ ad->ad_md->adf_flags = oflags;
+ /* just created, set owner if admin owner (root) */
+ if (!st_invalid) {
+ ad_chown(ad_p, &st_dir);
+ }
+ } else {
+ return ad_error(ad, adflags);
+ }
+ } else {
+ ad->ad_md->adf_flags = hoflags;
+ if (fstat(ad->ad_md->adf_fd, &st_meta) == 0 && st_meta.st_size == 0) {
+ /* for 0 length files, treat them as new. */
+ ad->ad_md->adf_flags |= O_TRUNC;
+ } else {
+ /* we have valid data in st_meta stat structure, reused it in ad_header_read */
+ pst = &st_meta;
+ }
+ }
+ AD_SET(ad->ad_md->adf_off);
+
+ if ((ad->ad_md->adf_flags & ( O_TRUNC | O_CREAT ))) {
+ /* This is a new adouble header file, create it */
+ if (new_ad_header(path, ad, adflags) < 0) {
+ int err = errno;
+ /* the file is already deleted, perm, whatever, so return an error */
+ ad_close(ad, adflags);
+ errno = err;
+ return -1;
+ }
+ ad_flush(ad);
+ } else {
+ /* Read the adouble header in and parse it.*/
+ if (ad->ad_ops->ad_header_read( ad , pst) < 0
+ || ad->ad_ops->ad_header_upgrade(ad, ad_p) < 0) {
+ int err = errno;
+ ad_close( ad, adflags );
+ errno = err;
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int ad_open_hf_ea(const char *path, int adflags, int oflags, int mode, struct adouble *ad)
+{
+ ssize_t rforklen;
+ int ret;
+ int err;
+
+ LOG(log_maxdebug, logtype_default, "ad_open_hf_ea(\"%s/%s\", adf: 0x%04x, of: 0x%04x)",
+ getcwdpath(), path, adflags, oflags);
+
+ if ((ad->ad_md->adf_fd = open(path, O_RDONLY | O_NOFOLLOW)) == -1)
+ return -1;
+
+ /* Read the adouble header in and parse it.*/
+ if (ad->ad_ops->ad_header_read(ad, NULL) != 0) {
+ if (!(oflags & O_CREAT)) {
+ err = errno;
+ ad_close(ad, adflags);
+ errno = err;
+ return -1;
+ }
+
+ /* It doesnt exist, EPERM or another error */
+ if (errno != ENOATTR && errno != ENOENT) {
+ LOG(log_error, logtype_default, "ad_open_hf_ea: unexpected: %s", strerror(errno));
+ ret = -1;
+ goto error;
+ }
+
+ /* Create one */
+ if (new_ad_header(path, ad, adflags) < 0) {
+ LOG(log_error, logtype_default, "ad_open_hf_ea: can't create new header: %s/%s",
+ getcwdpath(), path);
+ ret = -1;
+ goto error;
+ }
+
+ ad_flush(ad);
+ }
+
+ ad->ad_md->adf_flags = O_RDWR; /* Pretend its rw, in fact for the EA API it is */
+
+ if ((rforklen = sys_fgetxattr(ad->ad_md->adf_fd, AD_EA_RESO, NULL, 0)) > 0)
+ ad->ad_rlen = rforklen;
+
+ return 0;
+
+error:
+ err = errno;
+ ad_close(ad, adflags);
+ errno = err;
+ return ret;
+}
+
+static int ad_open_hf(const char *path, int adflags, int oflags, int mode, struct adouble *ad)
+{
+ int ret = 0;
+
+ LOG(log_maxdebug, logtype_default, "ad_open_hf(\"%s/%s\", adf: 0x%04x, of: 0x%04x)",
+ getcwdpath(), path, adflags, oflags);
+
+ if (ad_meta_fileno(ad) != -1) { /* the file is already open */
+ LOG(log_maxdebug, logtype_default,"the file is already open");
+ if ((oflags & ( O_RDWR | O_WRONLY))
+ && !(ad->ad_md->adf_flags & ( O_RDWR | O_WRONLY))) {
+ if ((adflags & ADFLAGS_HF) && ad->ad_data_fork.adf_refcount)
+ /* We just have openend the df, so we have to close it now */
+ ad_close(ad, ADFLAGS_DF);
+ errno = EACCES;
+ return -1;
+ }
+ ad_refresh(ad);
+ /* it's not new anymore */
+ ad->ad_md->adf_flags &= ~( O_TRUNC | O_CREAT );
+ ad->ad_md->adf_refcount++;
+ return 0;
}
+ memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
+ ad->ad_rlen = 0;
+ adf_lock_init(ad->ad_md);
+
+ switch (ad->ad_flags) {
+ case AD_VERSION2:
+ ret = ad_open_hf_v2(path, adflags, oflags, mode, ad);
+ break;
+ case AD_VERSION_EA:
+ ret = ad_open_hf_ea(path, adflags, oflags, mode, ad);
+ break;
+ default:
+ ret = -1;
+ break;
+ }
+
+ ad->ad_md->adf_refcount = 1;
+
+ return ret;
+}
+
+static int ad_open_rf(const char *path, int adflags, int oflags, int mode, struct adouble *ad)
+{
return 0;
}
+/***********************************************************************************
+ * API functions
+ ********************************************************************************* */
+
+char *ad_path_ea( const char *path, int adflags _U_)
+{
+ return path;
+}
/*
* Put the .AppleDouble where it needs to be:
*
- * / a/.AppleDouble/b
- * a/b
- * \ b/.AppleDouble/.Parent
+ * / a/.AppleDouble/b
+ * a/b
+ * \ b/.AppleDouble/.Parent
+ *
+ * FIXME: should do something for pathname > MAXPATHLEN
*/
-char *
-ad_path( path, adflags )
- const char *path;
- int adflags;
+char *ad_path( const char *path, int adflags)
{
- static char pathbuf[ MAXPATHLEN + 1];
- char c, *slash, buf[MAXPATHLEN + 1];
+ static char pathbuf[ MAXPATHLEN + 1];
+ const char *slash;
+ size_t l ;
- strncpy(buf, path, MAXPATHLEN);
if ( adflags & ADFLAGS_DIR ) {
- strncpy( pathbuf, buf, MAXPATHLEN );
- if ( *buf != '\0' ) {
- strcat( pathbuf, "/" );
- }
- slash = ".Parent";
+ l = strlcpy( pathbuf, path, sizeof(pathbuf));
+
+ if ( l && l < MAXPATHLEN) {
+ pathbuf[l++] = '/';
+ }
+ strlcpy(pathbuf +l, ".AppleDouble/.Parent", sizeof(pathbuf) -l);
} else {
- if (NULL != ( slash = strrchr( buf, '/' )) ) {
- c = *++slash;
- *slash = '\0';
- strncpy( pathbuf, buf, MAXPATHLEN);
- *slash = c;
- } else {
- pathbuf[ 0 ] = '\0';
- slash = buf;
- }
- }
- strncat( pathbuf, ".AppleDouble/", MAXPATHLEN - strlen(pathbuf));
- strncat( pathbuf, slash, MAXPATHLEN - strlen(pathbuf));
+ if (NULL != ( slash = strrchr( path, '/' )) ) {
+ slash++;
+ l = slash - path;
+ /* XXX we must return NULL here and test in the caller */
+ if (l > MAXPATHLEN)
+ l = MAXPATHLEN;
+ memcpy( pathbuf, path, l);
+ } else {
+ l = 0;
+ slash = path;
+ }
+ l += strlcpy( pathbuf +l, ".AppleDouble/", sizeof(pathbuf) -l);
+ strlcpy( pathbuf + l, slash, sizeof(pathbuf) -l);
+ }
return( pathbuf );
}
-/*
+/* -------------------------
* Support inherited protection modes for AppleDouble files. The supplied
* mode is ANDed with the parent directory's mask value in lieu of "umask",
* and that value is returned.
*/
-
-#define DEFMASK 07700 /* be conservative */
-
-char
-*ad_dir(path)
- const char *path;
+char *ad_dir(const char *path)
{
- static char modebuf[ MAXPATHLEN + 1];
- char *slash;
-
- if ( strlen( path ) >= MAXPATHLEN ) {
- return NULL; /* can't do it */
- }
-
+ static char modebuf[ MAXPATHLEN + 1];
+ char *slash;
/*
* For a path with directories in it, remove the final component
* (path or subdirectory name) to get the name we want to stat.
* For a path which is just a filename, use "." instead.
*/
- strcpy( modebuf, path );
- if (NULL != ( slash = strrchr( modebuf, '/' )) ) {
- *slash = '\0'; /* remove pathname component */
- } else {
- modebuf[0] = '.'; /* use current directory */
- modebuf[1] = '\0';
+ slash = strrchr( path, '/' );
+ if (slash) {
+ size_t len;
+
+ len = slash - path;
+ if (len >= MAXPATHLEN) {
+ errno = ENAMETOOLONG;
+ return NULL; /* can't do it */
+ }
+ memcpy( modebuf, path, len );
+ modebuf[len] = '\0';
+ /* is last char a '/' ? */
+ if (slash[1] == 0) {
+ slash = modebuf+ len;
+ /* remove them */
+ while (modebuf < slash && slash[-1] == '/') {
+ --slash;
+ }
+ if (modebuf == slash) {
+ goto use_cur;
+ }
+ *slash = '\0';
+ while (modebuf < slash && *slash != '/') {
+ --slash;
+ }
+ if (modebuf == slash) {
+ goto use_cur;
+ }
+ *slash = '\0'; /* remove pathname component */
+ }
+ return modebuf;
}
+use_cur:
+ modebuf[0] = '.'; /* use current directory */
+ modebuf[1] = '\0';
return modebuf;
}
-int
-ad_mode( path, mode )
- const char *path;
- int mode;
+int ad_setfuid(const uid_t id)
{
- struct stat stbuf;
- char *p;
-
- if ( mode == 0 ) {
- return( mode ); /* save on syscalls */
- }
- p = ad_dir(path);
- if (!p) {
- return( mode & DEFMASK ); /* can't do it */
- }
+ default_uid = id;
+ return 0;
+}
- if ( stat( p, &stbuf ) != 0 ) {
- return( mode & DEFMASK ); /* bail out... can't stat dir? */
- }
+/* ---------------- */
+uid_t ad_getfuid(void)
+{
+ return default_uid;
+}
+
+/* ----------------
+ stat path parent directory
+*/
+int ad_stat(const char *path, struct stat *stbuf)
+{
+ char *p;
+
+ p = ad_dir(path);
+ if (!p)
+ return -1;
+ return lstat( p, stbuf );
+}
- return( mode & stbuf.st_mode );
+/* ----------------
+ return access right of path parent directory
+*/
+int ad_mode( const char *path, int mode)
+{
+ struct stat stbuf;
+ ad_mode_st(path, &mode, &stbuf);
+ return mode;
}
/*
* Use mkdir() with mode bits taken from ad_mode().
*/
-int
-ad_mkdir( path, mode )
- const char *path;
- int mode;
+int ad_mkdir( const char *path, int mode)
{
-#ifdef DEBUG
- LOG(log_info, logtype_default, "ad_mkdir: Creating directory with mode %d", mode);
-#endif /* DEBUG */
- return mkdir( path, ad_mode( path, mode ) );
+ int ret;
+ int st_invalid;
+ struct stat stbuf;
+
+ 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 );
+ if (ret || st_invalid)
+ return ret;
+ ad_chown(path, &stbuf);
+
+ return ret;
}
+void ad_init(struct adouble *ad, int flags, int options)
+{
+ ad->ad_inited = 0;
+ ad->ad_flags = flags;
+ if (flags == AD_VERSION2) {
+ ad->ad_ops = &ad_adouble;
+ ad->ad_md = &ad->ad_resource_fork;
+ }
+ else if (flags == AD_VERSION_EA) {
+ ad->ad_ops = &ad_adouble_ea;
+ ad->ad_md = &ad->ad_metadata_fork;
+ } else {
+ LOG(log_error, logtype_default, "ad_init: unknown AD version");
+ errno = EIO;
+ return;
+ }
+
+ ad->ad_options = options;
-static int new_rfork(const char *path, struct adouble *ad, int adflags);
+ ad_data_fileno(ad) = -1;
+ ad_reso_fileno(ad) = -1;
+ ad_meta_fileno(ad) = -1;
-#ifdef HAVE_PREAD
-#define AD_SET(a)
-#else
-#define AD_SET(a) a = 0
-#endif
-/*
- * It's not possible to open the header file O_RDONLY -- the read
- * will fail and return an error. this refcounts things now.
+ /* following can be read even if there's no meda data. */
+ memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
+ ad->ad_rlen = 0;
+}
+
+/*!
+ * Open data-, metadata(header)- or ressource fork
+ *
+ * You must call ad_init() before ad_open, usually you'll just call it like this: \n
+ * @code
+ * struct adoube ad;
+ * ad_init(&ad, vol->v_adouble, vol->v_ad_options);
+ * @endcode
+ *
+ * @param path Path to file or directory
+ *
+ * @param adflags ADFLAGS_DF: open data fork \n
+ * ADFLAGS_RF: open ressource fork \n
+ * ADFLAGS_HF: open header (metadata) file \n
+ * ADFLAGS_NOHF: it's not an error if header file couldn't be created \n
+ * ADFLAGS_DIR: if path is a directory you MUST or ADFLAGS_DIR to adflags \n
+ * ADFLAGS_NOADOUBLE: dont create adouble files if not necessary \n
+ * ADFLAGS_RDONLY: open read only \n
+ * ADFLAGS_OPENFORKS: check for open forks from other processes
+ *
+ * @param oflags flags passed through to open syscall: \n
+ * O_RDONLY: *** FIXME *** \n
+ * O_RDWR: *** FIXME *** \n
+ * O_CREAT: create fork \n
+ * O_EXCL: fail if exists with O_CREAT
+ *
+ * @param mode passed to open with O_CREAT
+ * @param ad pointer to struct adouble
+ *
+ * @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.\n
+ * metadata(ressource)-fork only gets created with O_CREAT.
*/
-int ad_open( path, adflags, oflags, mode, ad )
- const char *path;
- int adflags, oflags, mode;
- struct adouble *ad;
+int ad_open(const char *path, int adflags, int oflags, int mode, struct adouble *ad)
{
- struct stat st;
- char *slash, *ad_p;
- int hoflags, admode;
-
if (ad->ad_inited != AD_INITED) {
- ad_dfileno(ad) = -1;
- ad_hfileno(ad) = -1;
- adf_lock_init(&ad->ad_df);
- adf_lock_init(&ad->ad_hf);
ad->ad_inited = AD_INITED;
ad->ad_refcount = 1;
+ ad->ad_open_forks = 0;
+ 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);
+ /* XXX not true if we have a meta data fork ? */
+ if ((ad->ad_resource_fork.adf_refcount > ad->ad_data_fork.adf_refcount))
+ ad->ad_open_forks |= ATTRBIT_ROPEN;
}
- if ((adflags & ADFLAGS_DF)) {
- if (ad_dfileno(ad) == -1) {
- hoflags = (oflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
- admode = ad_mode( path, mode );
- if (( ad->ad_df.adf_fd = open( path, hoflags, admode )) < 0 ) {
- if (errno == EACCES && !(oflags & O_RDWR)) {
- hoflags = oflags;
- ad->ad_df.adf_fd =open( path, hoflags, admode );
- }
- }
- if ( ad->ad_df.adf_fd < 0)
- return -1;
-
- AD_SET(ad->ad_df.adf_off);
- ad->ad_df.adf_flags = hoflags;
- }
- else {
- /* the file is already open... but */
- if ((oflags & ( O_RDWR | O_WRONLY)) && /* we want write access */
- !(ad->ad_df.adf_flags & ( O_RDWR | O_WRONLY))) /* and it was denied the first time */
- {
- errno = EACCES;
- return -1;
- }
- }
- ad->ad_df.adf_refcount++;
+ if ((adflags & ADFLAGS_DF)) {
+ if (ad_open_df(path, adflags, oflags, mode, ad) != 0)
+ return -1;
}
- if (!(adflags & ADFLAGS_HF))
- return 0;
-
- if (ad_hfileno(ad) != -1) { /* the file is already open */
- if ((oflags & ( O_RDWR | O_WRONLY)) &&
- !(ad->ad_hf.adf_flags & ( O_RDWR | O_WRONLY))) {
- if (adflags & ADFLAGS_DF) {
- /* don't call with ADFLAGS_HF because we didn't open ressource fork */
- ad_close( ad, ADFLAGS_DF );
- }
- errno = EACCES;
- return -1;
- }
- ad_refresh(ad);
- ad->ad_hf.adf_refcount++;
- return 0;
+ if ((adflags & ADFLAGS_HF)) {
+ if (ad_open_hf(path, adflags, oflags, mode, ad) != 0)
+ return -1;
}
- ad_p = ad_path( path, adflags );
-
- hoflags = oflags & ~O_CREAT;
- hoflags = (hoflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
- if (( ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 )) < 0 ) {
- if (errno == EACCES && !(oflags & O_RDWR)) {
- hoflags = oflags & ~O_CREAT;
- ad->ad_hf.adf_fd = open( ad_p, hoflags, 0 );
- }
+#if 0
+ if ((adflags & ADFLAGS_RF)) {
+ if (ad_open_rf(path, adflags, oflags, mode, ad) != 0)
+ return -1;
}
+#endif
- if ( ad->ad_hf.adf_fd < 0 ) {
- if (errno == ENOENT && (oflags & O_CREAT) ) {
- /*
- * We're expecting to create a new adouble header file,
- * here.
- * if ((oflags & O_CREAT) ==> (oflags & O_RDWR)
- */
- admode = ad_hf_mode(ad_mode( ad_p, mode ));
- errno = 0;
- if (( ad->ad_hf.adf_fd = open( ad_p, oflags,admode )) < 0 ) {
- /*
- * Probably .AppleDouble doesn't exist, try to
- * mkdir it.
- */
- if (errno == ENOENT && (adflags & ADFLAGS_NOADOUBLE) == 0) {
- if (NULL == ( slash = strrchr( ad_p, '/' )) ) {
- ad_close( ad, adflags );
- return( -1 );
- }
- *slash = '\0';
- errno = 0;
- if ( ad_mkdir( ad_p, 0777 ) < 0 ) {
- ad_close( ad, adflags );
- return( -1 );
- }
- *slash = '/';
- if (( ad->ad_hf.adf_fd =
- open( ad_p, oflags, ad_mode( ad_p, mode) )) < 0 ) {
- ad_close( ad, adflags );
- return( -1 );
- }
- } else {
- ad_close( ad, adflags );
- return( -1 );
- }
- }
- ad->ad_hf.adf_flags = oflags;
- } else {
- ad_close( ad, adflags );
- return( -1 );
- }
- } else if (fstat(ad->ad_hf.adf_fd, &st) == 0 && st.st_size == 0) {
- /* for 0 length files, treat them as new. */
- ad->ad_hf.adf_flags = (oflags & ~(O_RDONLY | O_WRONLY)) | O_RDWR | O_TRUNC;
- } else {
- ad->ad_hf.adf_flags = hoflags;
- }
- AD_SET(ad->ad_hf.adf_off);
-
- memset(ad->ad_eid, 0, sizeof( ad->ad_eid ));
- ad->ad_hf.adf_refcount++;
- if ((ad->ad_hf.adf_flags & ( O_TRUNC | O_CREAT ))) {
- /*
- * This is a new adouble header file. Initialize the structure,
- * instead of reading it.
- */
- if (new_rfork(path, ad, adflags) < 0) {
- ad_close(ad, adflags);
- return -1;
- }
- } else {
- /* 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)
-#endif /* AD_VERSION == AD_VERSION2 */
- ) {
- ad_close( ad, adflags );
- return( -1 );
- }
- }
- return 0 ;
+ return 0;
}
-/* ----------------------------------- */
-static int new_rfork(const char *path, struct adouble *ad, int adflags)
+/*!
+ * @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)
{
-#if 0
- struct timeval tv;
-#endif
- const struct entry *eid;
- u_int16_t ashort;
- struct stat st;
+ uid_t uid;
+ int ret, err, dir;
+ int create = O_RDONLY;
- ad->ad_magic = AD_MAGIC;
- ad->ad_version = AD_VERSION;
+ dir = flags & ADFLAGS_DIR;
- memset(ad->ad_filler, 0, sizeof( ad->ad_filler ));
- memset(ad->ad_data, 0, sizeof(ad->ad_data));
+ /* 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));
+ errno = EACCES;
+ return -1;
+ }
+ /* we are root open read only */
+ ret = ad_open(name, ADFLAGS_HF|ADFLAGS_RDONLY| dir, O_RDONLY, 0, adp);
+ err = errno;
+ if ( seteuid(uid) < 0) {
+ LOG(log_error, logtype_default, "ad_metadata: can't seteuid back");
+ exit(EXITERR_SYS);
+ }
+ errno = err;
+ }
- eid = entry_order;
- while (eid->id) {
- ad->ad_eid[eid->id].ade_off = eid->offset;
- ad->ad_eid[eid->id].ade_len = eid->len;
- eid++;
+ if (!ret && (ADFLAGS_OPENFORKS & flags)) {
+ /*
+ we need to check if the file is open by another process.
+ it's slow so we only do it if we have to:
+ - it's requested.
+ - we don't already have the answer!
+ */
+ adp->ad_open_forks |= ad_openforks(adp, adp->ad_open_forks);
}
-
- /* put something sane in the directory finderinfo */
- if (adflags & ADFLAGS_DIR) {
- /* set default view */
- ashort = htons(FINDERINFO_CLOSEDVIEW);
- memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRVIEWOFF,
- &ashort, sizeof(ashort));
- } else {
- /* set default creator/type fields */
- memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRTYPEOFF,"TEXT", 4);
- memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRCREATOFF,"UNIX", 4);
+ 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;
+ }
}
- /* make things invisible */
- if ((*path == '.') && strcmp(path, ".") && strcmp(path, "..")) {
- ashort = htons(ATTRBIT_INVISIBLE);
- ad_setattr(ad, ashort);
- ashort = htons(FINDERINFO_INVISIBLE);
- memcpy(ad_entry(ad, ADEID_FINDERI) + FINDERINFO_FRFLAGOFF,
- &ashort, sizeof(ashort));
+ if (ad_metadata(name, flags, adp) < 0) {
+ ret = -1;
+ goto exit;
}
-#if 0
- if (gettimeofday(&tv, NULL) < 0) {
- return -1;
- }
-#endif
-
- if (stat(path, &st) < 0) {
- return -1;
+ if (dirfd != -1) {
+ if (fchdir(cwdfd) != 0) {
+ LOG(log_error, logtype_afpd, "ad_openat: cant chdir back, exiting");
+ exit(EXITERR_SYS);
+ }
}
-
- /* put something sane in the date fields */
- ad_setdate(ad, AD_DATE_CREATE | AD_DATE_UNIX, st.st_mtime);
- ad_setdate(ad, AD_DATE_MODIFY | AD_DATE_UNIX, st.st_mtime);
- ad_setdate(ad, AD_DATE_ACCESS | AD_DATE_UNIX, st.st_mtime);
- ad_setdate(ad, AD_DATE_BACKUP, AD_DATE_START);
- return 0;
+
+exit:
+ if (cwdfd != -1)
+ close(cwdfd);
+
+ return ret;
+
}
-/* to do this with mmap, we need the hfs fs to understand how to mmap
- header files. */
int ad_refresh(struct adouble *ad)
{
- if (ad->ad_hf.adf_fd < -1)
- return -1;
+ if (ad_meta_fileno(ad) == -1)
+ 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 ad_header_read(ad, NULL);
+ return ret;
}
projects / netatalk.git / blobdiff