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cache volume attrs with superblock

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U-fast\aglo 2011-06-16 08:05:13 -04:00 • committed by unknown
parent a4c726f92d
commit f80d7ec365
4 changed files with 104 additions and 40 deletions
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80
daemon/volume.c
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@ -24,6 +24,7 @@
#include <Windows.h>
#include <strsafe.h>
#include <stdio.h>
#include <time.h>
#include "nfs41_ops.h"
#include "from_kernel.h"
@ -40,6 +41,8 @@
#define TO_UNITS(bytes) (bytes / BYTES_PER_UNIT)
#define VOLUME_CACHE_EXPIRATION 20
/* NFS41_VOLUME_QUERY */
static int parse_volume(unsigned char *buffer, uint32_t length, nfs41_upcall *upcall)
@ -63,21 +66,46 @@ static int get_volume_size_info(
OUT OPTIONAL PLONGLONG avail_out)
{
nfs41_file_info info = { 0 };
bitmap4 attr_request = { 2, { 0, FATTR4_WORD1_SPACE_AVAIL |
FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL } };
int status;
nfs41_superblock *superblock = state->file.fh.superblock;
int status = ERROR_NOT_FOUND;
/* query the space_ attributes of the root filesystem */
status = nfs41_getattr(state->session, &state->file, &attr_request, &info);
if (status) {
eprintf("nfs41_getattr() failed with %s\n",
nfs_error_string(status));
status = nfs_to_windows_error(status, ERROR_BAD_NET_RESP);
goto out;
AcquireSRWLockShared(&superblock->lock);
/* check superblock for cached attributes */
if (time(NULL) <= superblock->cache_expiration) {
info.space_total = superblock->space_total;
info.space_avail = superblock->space_avail;
info.space_free = superblock->space_free;
status = NO_ERROR;
dprintf(2, "%s cached: %llu user, %llu free of %llu total\n",
query, info.space_avail, info.space_free, info.space_total);
}
ReleaseSRWLockShared(&superblock->lock);
dprintf(2, "%s: %llu user, %llu free of %llu total\n", query,
info.space_avail, info.space_free, info.space_total);
if (status) {
bitmap4 attr_request = { 2, { 0, FATTR4_WORD1_SPACE_AVAIL |
FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL } };
/* query the space_ attributes of the filesystem */
status = nfs41_getattr(state->session, &state->file,
&attr_request, &info);
if (status) {
eprintf("nfs41_getattr() failed with %s\n",
nfs_error_string(status));
status = nfs_to_windows_error(status, ERROR_BAD_NET_RESP);
goto out;
}
AcquireSRWLockExclusive(&superblock->lock);
superblock->space_total = info.space_total;
superblock->space_avail = info.space_avail;
superblock->space_free = info.space_free;
superblock->cache_expiration = time(NULL) + VOLUME_CACHE_EXPIRATION;
ReleaseSRWLockExclusive(&superblock->lock);
dprintf(2, "%s: %llu user, %llu free of %llu total\n",
query, info.space_avail, info.space_free, info.space_total);
}
if (total_out) *total_out = TO_UNITS(info.space_total);
if (user_out) *user_out = TO_UNITS(info.space_avail);
@ -90,32 +118,20 @@ static int handle_volume_attributes(
IN volume_upcall_args *args,
IN nfs41_open_state *state)
{
/* query the case_ attributes of the root filesystem */
nfs41_file_info info = { 0 };
bitmap4 attr_request = { 1, { FATTR4_WORD0_CASE_INSENSITIVE |
FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_SYMLINK_SUPPORT |
FATTR4_WORD0_LINK_SUPPORT } };
PFILE_FS_ATTRIBUTE_INFORMATION attr = &args->info.attribute;
const nfs41_superblock *superblock = state->file.fh.superblock;
int status = NO_ERROR;
status = nfs41_getattr(state->session, &state->file, &attr_request, &info);
if (status) {
eprintf("nfs41_getattr() failed with %s\n",
nfs_error_string(status));
status = nfs_to_windows_error(status, ERROR_BAD_NET_RESP);
goto out;
}
attr->FileSystemAttributes = FILE_SUPPORTS_REMOTE_STORAGE;
if (info.link_support)
if (superblock->link_support)
attr->FileSystemAttributes |= FILE_SUPPORTS_HARD_LINKS;
if (info.symlink_support)
if (superblock->symlink_support)
attr->FileSystemAttributes |= FILE_SUPPORTS_REPARSE_POINTS;
if (info.case_preserving)
if (superblock->case_preserving)
attr->FileSystemAttributes |= FILE_CASE_PRESERVED_NAMES;
if (!info.case_insensitive)
if (!superblock->case_insensitive)
attr->FileSystemAttributes |= FILE_CASE_SENSITIVE_SEARCH;
if (state->file.fh.superblock->aclsupport)
if (superblock->aclsupport)
attr->FileSystemAttributes |= FILE_PERSISTENT_ACLS;
attr->MaximumComponentNameLength = NFS41_MAX_COMPONENT_LEN;
@ -126,9 +142,9 @@ static int handle_volume_attributes(
dprintf(2, "FileFsAttributeInformation: case_preserving %u, "
"case_insensitive %u, max component %u\n",
info.case_preserving, info.case_insensitive,
superblock->case_preserving, superblock->case_insensitive,
attr->MaximumComponentNameLength);
out:
return status;
}