static void
VInitPartition_r(char *path, char *devname, Device dev)
{
struct DiskPartition64 *dp, *op;
dp = malloc(sizeof(struct DiskPartition64));
/* Add it to the end, to preserve order when we print statistics */
for (op = DiskPartitionList; op; op = op->next) {
if (!op->next)
break;
}
if (op)
op->next = dp;
else
DiskPartitionList = dp;
dp->next = 0;
dp->name = strdup(path);
dp->index = volutil_GetPartitionID(path);
#if defined(AFS_NAMEI_ENV) && !defined(AFS_NT40_ENV)
/* Create a lockfile for the partition, of the form /vicepa/Lock/vicepa */
dp->devName = malloc(2 * strlen(path) + 6);
strcpy(dp->devName, path);
strcat(dp->devName, OS_DIRSEP);
strcat(dp->devName, "Lock");
mkdir(dp->devName, 0700);
strcat(dp->devName, path);
close(afs_open(dp->devName, O_RDWR | O_CREAT, 0600));
dp->device = dp->index;
#else
dp->devName = strdup(devname);
dp->device = dev;
#endif
dp->lock_fd = INVALID_FD;
dp->flags = 0;
dp->f_files = 1; /* just a default value */
#if defined(AFS_NAMEI_ENV) && !defined(AFS_NT40_ENV)
if (programType == fileServer)
(void)namei_ViceREADME(VPartitionPath(dp));
#endif
VSetPartitionDiskUsage_r(dp);
#ifdef AFS_DEMAND_ATTACH_FS
AddPartitionToTable_r(dp);
queue_Init(&dp->vol_list.head);
CV_INIT(&dp->vol_list.cv, "vol list", CV_DEFAULT, 0);
dp->vol_list.len = 0;
dp->vol_list.busy = 0;
{
char lockpath[MAXPATHLEN+1];
snprintf(lockpath, MAXPATHLEN, "%s/" AFS_PARTLOCK_FILE, dp->name);
lockpath[MAXPATHLEN] = '\0';
VLockFileInit(&dp->headerLockFile, lockpath);
snprintf(lockpath, MAXPATHLEN, "%s/" AFS_VOLUMELOCK_FILE, dp->name);
lockpath[MAXPATHLEN] = '\0';
VLockFileInit(&dp->volLockFile, lockpath);
}
VDiskLockInit(&dp->headerLock, &dp->headerLockFile, 1);
#endif /* AFS_DEMAND_ATTACH_FS */
}
static int
fs_stateLoadDump(struct fs_dump_state * state)
{
afs_uint64 z;
int fd, ret = 0;
struct afs_stat status;
afs_int32 now = FT_ApproxTime();
ZeroInt64(z);
if ((fd = afs_open(state->fn, O_RDWR)) == -1 ||
(afs_fstat(fd, &status) == -1)) {
ViceLog(0, ("fs_stateLoadDump: failed to load state dump file '%s'\n",
state->fn));
ret = 1;
goto done;
}
state->fd = fd;
state->mode = FS_STATE_LOAD_MODE;
state->file_len = status.st_size;
#ifdef FS_STATE_USE_MMAP
if (fs_stateMapFile(state)) {
ViceLog(0, ("fs_stateLoadDump: failed to memory map state dump file '%s'\n",
state->fn));
ret = 1;
goto done;
}
#endif
if (fs_stateReadHeader(state, &z, state->hdr, sizeof(struct fs_state_header))) {
ViceLog(0, ("fs_stateLoadDump: failed to read header from dump file '%s'\n",
state->fn));
ret = 1;
goto done;
}
/* check the validity of the header */
if (fs_stateCheckHeader(state->hdr)) {
ViceLog(1, ("fs_stateLoadDump: header failed validity checks; not restoring '%s'\n",
state->fn));
ret = 1;
goto done;
}
if ((state->hdr->timestamp + HOST_STATE_VALID_WINDOW) >= now) {
state->flags.do_host_restore = 1;
} else {
ViceLog(0, ("fs_stateLoadDump: warning: dump is too old for host and callback restore; skipping those steps\n"));
}
done:
return ret;
}
/*
* open an AFS directory file
*/
static int afs_dir_open(struct inode *inode, struct file *file)
{
_enter("{%lu}", inode->i_ino);
BUILD_BUG_ON(sizeof(union afs_dir_block) != 2048);
BUILD_BUG_ON(sizeof(union afs_dirent) != 32);
if (test_bit(AFS_VNODE_DELETED, &AFS_FS_I(inode)->flags))
return -ENOENT;
return afs_open(inode, file);
}
static int
fs_stateCreateDump(struct fs_dump_state * state)
{
int fd, ret = 0;
char savedump[MAXPATHLEN];
struct afs_stat status;
afs_snprintf(savedump, sizeof(savedump), "%s.old", state->fn);
if (afs_stat(state->fn, &status) == 0) {
renamefile(state->fn, savedump);
}
if (((fd = afs_open(state->fn,
O_RDWR | O_CREAT | O_TRUNC,
S_IRUSR | S_IWUSR)) == -1) ||
(afs_fstat(fd, &status) == -1)) {
ViceLog(0, ("fs_stateCreateDump: failed to create state dump file '%s'\n",
state->fn));
ret = 1;
goto done;
}
state->fd = fd;
state->mode = FS_STATE_DUMP_MODE;
memset(state->hdr, 0, sizeof(struct fs_state_header));
fs_stateIncEOF(state, sizeof(struct fs_state_header));
#ifdef FS_STATE_USE_MMAP
if (fs_stateSizeFile(state)) {
ViceLog(0, ("fs_stateCreateDump: failed to resize state dump file '%s'\n",
state->fn));
ret = 1;
goto done;
}
if (fs_stateMapFile(state)) {
ViceLog(0, ("fs_stateCreateDump: failed to memory map state dump file '%s'\n",
state->fn));
ret = 1;
goto done;
}
#endif
ret = fs_stateInvalidateDump(state);
done:
return ret;
}
void
HandleVolume(struct DiskPartition64 *dp, char *name, char *filename, int fromtime)
{
struct VolumeHeader header;
struct VolumeDiskHeader diskHeader;
struct afs_stat status, stat;
register int fd;
Volume *vp;
IHandle_t *ih;
char headerName[1024];
afs_int32 n;
(void)afs_snprintf(headerName, sizeof headerName, "%s/%s",
VPartitionPath(dp), name);
if ((fd = afs_open(headerName, O_RDONLY)) == -1
|| afs_fstat(fd, &status) == -1) {
fprintf(stderr, "Cannot read volume header %s\n", name);
close(fd);
exit(1);
}
n = read(fd, &diskHeader, sizeof(diskHeader));
if (n != sizeof(diskHeader)
|| diskHeader.stamp.magic != VOLUMEHEADERMAGIC) {
fprintf(stderr, "Error reading volume header %s\n", name);
exit(1);
}
if (diskHeader.stamp.version != VOLUMEHEADERVERSION) {
fprintf(stderr,
"Volume %s, version number is incorrect; volume needs salvage\n",
name);
exit(1);
}
DiskToVolumeHeader(&header, &diskHeader);
close(fd);
vp = AttachVolume(dp, name, &header);
if (!vp) {
fprintf(stderr, "Error attaching volume header %s\n", name);
exit(1);
}
DoMyVolDump(vp, dp, filename, fromtime);
}
static int
openFile(char * path)
{
int ret = 0;
struct afs_stat status;
dump_fd = afs_open(path, O_RDWR);
if (dump_fd == -1) {
fprintf(stderr, "dump file '%s' failed to open\n", path);
ret = 1;
goto done;
}
printf("opened dump file '%s'\n", path);
if (afs_fstat(dump_fd, &status) == -1) {
fprintf(stderr, "failed to stat file\n");
ret = 1;
goto done;
}
map_len = status.st_size;
map = afs_mmap(NULL, map_len, PROT_READ, MAP_SHARED, dump_fd, 0);
if (map == MAP_FAILED) {
fprintf(stderr, "failed to mmap file\n");
ret = 1;
goto done;
}
printf("mapped %lu bytes at %"AFS_PTR_FMT"\n", (unsigned long)map_len, map);
done:
if (ret) {
if (map) {
munmap(map, map_len);
map = NULL;
}
if (dump_fd != -1) {
close(dump_fd);
dump_fd = -1;
}
}
return ret;
}
void
HandleVolume(struct DiskPartition64 *dp, char *name)
{
struct VolumeHeader header;
struct VolumeDiskHeader diskHeader;
struct afs_stat status, stat;
int fd;
Volume *vp;
IHandle_t *ih;
char headerName[1024];
if (online) {
printf("volinfo: -online not supported\n");
exit(1);
} else {
afs_int32 n;
(void)afs_snprintf(headerName, sizeof headerName, "%s/%s",
VPartitionPath(dp), name);
if ((fd = afs_open(headerName, O_RDONLY)) == -1
|| afs_fstat(fd, &status) == -1) {
printf("Volinfo: Cannot read volume header %s\n", name);
close(fd);
exit(1);
}
n = read(fd, &diskHeader, sizeof(diskHeader));
if (n != sizeof(diskHeader)
|| diskHeader.stamp.magic != VOLUMEHEADERMAGIC) {
printf("Volinfo: Error reading volume header %s\n", name);
exit(1);
}
if (diskHeader.stamp.version != VOLUMEHEADERVERSION) {
printf
("Volinfo: Volume %s, version number is incorrect; volume needs salvage\n",
name);
exit(1);
}
DiskToVolumeHeader(&header, &diskHeader);
if (dheader) {
FdHandle_t *fdP;
afs_sfsize_t size = 0;
afs_sfsize_t code;
if (afs_fstat(fd, &stat) == -1) {
perror("stat");
exit(1);
}
if (!dsizeOnly && !saveinodes) {
size = stat.st_size;
printf("Volume header (size = %d):\n", (int)size);
printf("\tstamp\t= 0x%x\n", header.stamp.version);
printf("\tVolId\t= %u\n", header.id);
}
IH_INIT(ih, dp->device, header.parent, header.volumeInfo);
fdP = IH_OPEN(ih);
if (fdP == NULL) {
perror("opening volume info");
exit(1);
}
code = FDH_SIZE(fdP);
if (code == -1) {
perror("fstat");
exit(1);
}
FDH_REALLYCLOSE(fdP);
IH_RELEASE(ih);
size += code;
if (!dsizeOnly && !saveinodes) {
printf("\tparent\t= %u\n", header.parent);
printf("\tInfo inode\t= %s (size = %d)\n",
PrintInode(NULL, header.volumeInfo), (int)code);
}
IH_INIT(ih, dp->device, header.parent, header.smallVnodeIndex);
fdP = IH_OPEN(ih);
if (fdP == NULL) {
perror("opening small vnode index");
exit(1);
}
code = FDH_SIZE(fdP);
if (code == -1) {
perror("fstat");
exit(1);
}
FDH_REALLYCLOSE(fdP);
IH_RELEASE(ih);
size += code;
if (!dsizeOnly && !saveinodes) {
printf("\tSmall inode\t= %s (size = %d)\n",
PrintInode(NULL, header.smallVnodeIndex), (int)code);
}
IH_INIT(ih, dp->device, header.parent, header.largeVnodeIndex);
fdP = IH_OPEN(ih);
if (fdP == NULL) {
perror("opening large vnode index");
exit(1);
}
code = FDH_SIZE(fdP);
if (code == -1) {
perror("fstat");
exit(1);
}
FDH_REALLYCLOSE(fdP);
IH_RELEASE(ih);
size += code;
if (!dsizeOnly && !saveinodes) {
printf("\tLarge inode\t= %s (size = %d)\n",
PrintInode(NULL, header.largeVnodeIndex), (int)code);
#ifndef AFS_NT40_ENV
printf("Total aux volume size = %d\n\n", (int)size);
#endif
}
#ifdef AFS_NAMEI_ENV
IH_INIT(ih, dp->device, header.parent, header.linkTable);
fdP = IH_OPEN(ih);
if (fdP == NULL) {
perror("opening link table index");
exit(1);
}
code = FDH_SIZE(fdP);
if (code == -1) {
perror("fstat");
exit(1);
}
FDH_REALLYCLOSE(fdP);
IH_RELEASE(ih);
size += code;
if (!dsizeOnly && !saveinodes) {
printf("\tLink inode\t= %s (size = %d)\n",
PrintInode(NULL, header.linkTable), (int)code);
printf("Total aux volume size = %d\n\n", (int)size);
}
#endif
Vauxsize = size;
Vauxsize_k = size / 1024;
}
close(fd);
vp = AttachVolume(dp, name, &header);
if (!vp) {
printf("Volinfo: Error attaching volume header %s\n", name);
return;
}
}
PrintHeader(vp);
if (DumpVnodes) {
if (!dsizeOnly && !saveinodes)
printf("\nLarge vnodes (directories)\n");
PrintVnodes(vp, vLarge);
if (!dsizeOnly && !saveinodes) {
printf("\nSmall vnodes(files, symbolic links)\n");
fflush(stdout);
}
if (saveinodes)
printf("Saving all volume files to current directory ...\n");
PrintVnodes(vp, vSmall);
}
if (dsizeOnly) {
totvolsize = Vauxsize_k + Vvnodesize_k;
if (saveinodes)
printf
("Volume-Id\t Volsize Auxsize Inodesize AVolsize SizeDiff (VolName)\n");
printf("%u\t%9d%9d%10d%10d%9d\t%24s\n", V_id(vp), Vdiskused,
Vauxsize_k, Vvnodesize_k, totvolsize, totvolsize - Vdiskused,
V_name(vp));
}
free(vp->header);
free(vp);
}
void
VLockPartition_r(char *name)
{
register struct DiskPartition64 *dp = VGetPartition_r(name, 0);
char *partitionName;
int retries, code;
struct timeval pausing;
#if defined(AFS_HPUX_ENV)
int lockfRtn;
struct privgrp_map privGrpList[PRIV_MAXGRPS];
unsigned int *globalMask;
int globalMaskIndex;
#endif /* defined(AFS_HPUX_ENV) */
#if defined(AFS_DARWIN_ENV)
char lockfile[MAXPATHLEN];
#endif /* defined(AFS_DARWIN_ENV) */
#ifdef AFS_NAMEI_ENV
#ifdef AFS_AIX42_ENV
char LockFileName[MAXPATHLEN + 1];
sprintf((char *)&LockFileName, "%s/AFSINODE_FSLock", name);
partitionName = (char *)&LockFileName;
#endif
#endif
if (!dp)
return; /* no partition, will fail later */
if (dp->lock_fd != -1)
return;
#if defined(AFS_SUN5_ENV) || defined(AFS_AIX41_ENV)
#if !defined(AFS_AIX42_ENV) || !defined(AFS_NAMEI_ENV)
partitionName = dp->devName;
#endif
code = O_RDWR;
#elif defined(AFS_DARWIN_ENV)
strlcpy((partitionName = lockfile), dp->name, sizeof(lockfile));
strlcat(lockfile, "/.lock.afs", sizeof(lockfile));
code = O_RDONLY | O_CREAT;
#else
partitionName = dp->name;
code = O_RDONLY;
#endif
for (retries = 25; retries; retries--) {
dp->lock_fd = afs_open(partitionName, code);
if (dp->lock_fd != -1)
break;
if (errno == ENOENT)
code |= O_CREAT;
pausing.tv_sec = 0;
pausing.tv_usec = 500000;
select(0, NULL, NULL, NULL, &pausing);
}
assert(retries != 0);
#if defined (AFS_HPUX_ENV)
assert(getprivgrp(privGrpList) == 0);
/*
* In general, it will difficult and time-consuming ,if not impossible,
* to try to find the privgroup to which this process belongs that has the
* smallest membership, to minimise the security hole. So, we use the privgrp
* to which everybody belongs.
*/
/* first, we have to find the global mask */
for (globalMaskIndex = 0; globalMaskIndex < PRIV_MAXGRPS;
globalMaskIndex++) {
if (privGrpList[globalMaskIndex].priv_groupno == PRIV_GLOBAL) {
globalMask =
&(privGrpList[globalMaskIndex].priv_mask[LOCKRDONLY_OFFSET]);
break;
}
}
if (((*globalMask) & privmask(PRIV_LOCKRDONLY)) == 0) {
/* allow everybody to set a lock on a read-only file descriptor */
(*globalMask) |= privmask(PRIV_LOCKRDONLY);
assert(setprivgrp(PRIV_GLOBAL, privGrpList[globalMaskIndex].priv_mask)
== 0);
lockfRtn = lockf(dp->lock_fd, F_LOCK, 0);
/* remove the privilege granted to everybody to lock a read-only fd */
(*globalMask) &= ~(privmask(PRIV_LOCKRDONLY));
assert(setprivgrp(PRIV_GLOBAL, privGrpList[globalMaskIndex].priv_mask)
== 0);
} else {
/* in this case, we should be able to do this with impunity, anyway */
lockfRtn = lockf(dp->lock_fd, F_LOCK, 0);
}
assert(lockfRtn != -1);
#else
#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
assert(lockf(dp->lock_fd, F_LOCK, 0) != -1);
#else
assert(flock(dp->lock_fd, LOCK_EX) == 0);
#endif /* defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV) */
#endif
}
/**
* handle a single vol header as part of VWalkVolumeHeaders.
*
* @param[in] dp disk partition
* @param[in] volfunc function to call when a vol header is successfully read
* @param[in] name full path name to the .vol header
* @param[out] hdr header data read in from the .vol header
* @param[in] locked 1 if the partition headers are locked, 0 otherwise
* @param[in] rock the rock to pass to volfunc
*
* @return operation status
* @retval 0 success
* @retval -1 fatal error, stop scanning
* @retval 1 failed to read header
* @retval 2 volfunc callback indicated error after header read
*/
static int
_VHandleVolumeHeader(struct DiskPartition64 *dp, VWalkVolFunc volfunc,
const char *name, struct VolumeDiskHeader *hdr,
int locked, void *rock)
{
int error = 0;
int fd;
if ((fd = afs_open(name, O_RDONLY)) == -1
|| read(fd, hdr, sizeof(*hdr))
!= sizeof(*hdr)
|| hdr->stamp.magic != VOLUMEHEADERMAGIC) {
error = 1;
}
if (fd >= 0) {
close(fd);
}
#ifdef AFSFS_DEMAND_ATTACH_FS
if (locked) {
VPartHeaderUnlock(dp);
}
#endif /* AFS_DEMAND_ATTACH_FS */
if (!error && volfunc) {
/* the volume header seems fine; call the caller-supplied
* 'we-found-a-volume-header' function */
int last = 1;
#ifdef AFS_DEMAND_ATTACH_FS
if (!locked) {
last = 0;
}
#endif /* AFS_DEMAND_ATTACH_FS */
error = (*volfunc) (dp, name, hdr, last, rock);
if (error < 0) {
return -1;
}
if (error) {
error = 2;
}
}
#ifdef AFS_DEMAND_ATTACH_FS
if (error && !locked) {
int code;
/* retry reading the volume header under the partition
* header lock, just to be safe and ensure we're not
* racing something rewriting the vol header */
code = VPartHeaderLock(dp, WRITE_LOCK);
if (code) {
Log("Error acquiring partition write lock when "
"looking at header %s\n", name);
return -1;
}
return _VHandleVolumeHeader(dp, volfunc, name, hdr, 1, rock);
}
#endif /* AFS_DEMAND_ATTACH_FS */
return error;
}
