diff options
| author | vmallika <vmallika@redhat.com> | 2015-09-22 12:17:50 +0530 |
|---|---|---|
| committer | Raghavendra G <rgowdapp@redhat.com> | 2015-09-28 04:12:16 -0700 |
| commit | ecfa2edd7816abbf8fbbe43c308ddf895849e8e6 (patch) | |
| tree | c540eaa1779b1586fbbab48336de606f454c0704 /libglusterfs/src/glusterfs.h | |
| parent | 7f33579e8a42eb19e92559a6c3acaeb92b6bb184 (diff) | |
posix: xattrop 'GF_XATTROP_ADD_ARRAY_WITH_DEFAULT' implementation
Implementation of xattrop type:
GF_XATTROP_ADD_ARRAY_WITH_DEFAULT
GF_XATTROP_ADD_ARRAY64_WITH_DEFAULT
These operations are similar to 'GF_XATTROP_ADD_ARRAY',
except that it adds a default value if xattr is missing
or its value is zero on disk.
One use-case of this operation is in inode-quota.
When a new directory is created, its default dir_count
should be set to 1. So when a xattrop performed setting
inode-xattrs, it should account initial dir_count
1 if the xattrs are not present
Here is the usage of this operation
value required in xdata for each key
struct array {
int32_t newvalue_1;
int32_t newvalue_2;
...
int32_t newvalue_n;
int32_t default_1;
int32_t default_2;
...
int32_t default_n;
};
or
struct array {
int32_t value_1;
int32_t value_2;
...
int32_t value_n;
} data[2];
fill data[0] with new value to add
fill data[1] with default value
xattrop GF_XATTROP_ADD_ARRAY_WITH_DEFAULT
for i from 1 to n
{
if (xattr (dest_i) is zero or not set in the disk)
dest_i = newvalue_i + default_i
else
dest_i = dest_i + newvalue_i
}
value in xdata after xattrop is successful
struct array {
int32_t dest_1;
int32_t dest_2;
...
int32_t dest_n;
};
Change-Id: Ic6a08473e99fd98299a839d4d8416081a7534efd
BUG: 1243946
Signed-off-by: vmallika <vmallika@redhat.com>
Reviewed-on: http://review.gluster.org/11702
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
Diffstat (limited to 'libglusterfs/src/glusterfs.h')
| -rw-r--r-- | libglusterfs/src/glusterfs.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libglusterfs/src/glusterfs.h b/libglusterfs/src/glusterfs.h index 18ffbb1f2b1..fae7d490af8 100644 --- a/libglusterfs/src/glusterfs.h +++ b/libglusterfs/src/glusterfs.h @@ -373,7 +373,9 @@ typedef enum { GF_XATTROP_ADD_ARRAY64, GF_XATTROP_OR_ARRAY, GF_XATTROP_AND_ARRAY, - GF_XATTROP_GET_AND_SET + GF_XATTROP_GET_AND_SET, + GF_XATTROP_ADD_ARRAY_WITH_DEFAULT, + GF_XATTROP_ADD_ARRAY64_WITH_DEFAULT } gf_xattrop_flags_t; #define GF_SET_IF_NOT_PRESENT 0x1 /* default behaviour */ |