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authorTim Prouty <tprouty@samba.org>2009-02-15 23:45:28 -0800
committerTim Prouty <tprouty@samba.org>2009-02-19 20:58:26 -0800
commite4675ce8db436ac572fcc476b9bfb1116e997f9f (patch)
tree7381a8a3aa92536fbfa58a75dee450f1f26d66ce /source3/lib
parent6fbebb5369211b72545a1dd588bc6b9fa04210a1 (diff)
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s3: Add extid to the dev/inode pair
This extends the file_id struct to add an additional generic uint64_t field: extid. For backwards compatibility with dev/inodes stored in xattr_tdbs and acl_tdbs, the ext id is ignored for these databases. This patch should cause no functional change on systems that don't use SMB_VFS_FILE_ID_CREATE to set the extid. Existing code that uses the smb_share_mode library will need to be updated to be compatibile with the new extid.
Diffstat (limited to 'source3/lib')
-rw-r--r--source3/lib/file_id.c30
1 files changed, 24 insertions, 6 deletions
diff --git a/source3/lib/file_id.c b/source3/lib/file_id.c
index 355aafa344..0902e3d224 100644
--- a/source3/lib/file_id.c
+++ b/source3/lib/file_id.c
@@ -34,7 +34,8 @@ struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_S
*/
bool file_id_equal(const struct file_id *id1, const struct file_id *id2)
{
- return id1->inode == id2->inode && id1->devid == id2->devid;
+ return id1->inode == id2->inode && id1->devid == id2->devid &&
+ id1->extid == id2->extid;
}
/*
@@ -42,15 +43,17 @@ bool file_id_equal(const struct file_id *id1, const struct file_id *id2)
*/
const char *file_id_string_tos(const struct file_id *id)
{
- char *result = talloc_asprintf(talloc_tos(), "%llx:%llx",
+ char *result = talloc_asprintf(talloc_tos(), "%llx:%llx:%llx",
(unsigned long long)id->devid,
- (unsigned long long)id->inode);
+ (unsigned long long)id->inode,
+ (unsigned long long)id->extid);
SMB_ASSERT(result != NULL);
return result;
}
/*
- push a 16 byte version of a file id into a buffer
+ push a 16 byte version of a file id into a buffer. This ignores the extid
+ and is needed when dev/inodes are stored in persistent storage (tdbs).
*/
void push_file_id_16(char *buf, const struct file_id *id)
{
@@ -61,13 +64,28 @@ void push_file_id_16(char *buf, const struct file_id *id)
}
/*
- pul a 16 byte version of a file id from a buffer
+ push a 24 byte version of a file id into a buffer
*/
-void pull_file_id_16(char *buf, struct file_id *id)
+void push_file_id_24(char *buf, const struct file_id *id)
+{
+ SIVAL(buf, 0, id->devid&0xFFFFFFFF);
+ SIVAL(buf, 4, id->devid>>32);
+ SIVAL(buf, 8, id->inode&0xFFFFFFFF);
+ SIVAL(buf, 12, id->inode>>32);
+ SIVAL(buf, 16, id->extid&0xFFFFFFFF);
+ SIVAL(buf, 20, id->extid>>32);
+}
+
+/*
+ pull a 24 byte version of a file id from a buffer
+ */
+void pull_file_id_24(char *buf, struct file_id *id)
{
ZERO_STRUCTP(id);
id->devid = IVAL(buf, 0);
id->devid |= ((uint64_t)IVAL(buf,4))<<32;
id->inode = IVAL(buf, 8);
id->inode |= ((uint64_t)IVAL(buf,12))<<32;
+ id->extid = IVAL(buf, 16);
+ id->extid |= ((uint64_t)IVAL(buf,20))<<32;
}