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simplify file_system.disk impl

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This commit is contained in:
Doug MacEachern 2007-11-04 19:56:22 +00:00
parent f02c9bbe1a
commit b633b1350b
1 changed files with 22 additions and 69 deletions
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91
src/os/solaris/solaris_sigar.c
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@ -1362,10 +1362,10 @@ typedef struct {
} fsdev_path_t;
typedef struct {
char module[8];
int instance;
char partition;
} fs_kstat_t;
char name[256];
int is_partition;
sigar_disk_usage_t disk;
} iodev_t;
static fsdev_path_t *get_fsdev_paths(sigar_t *sigar,
sigar_file_system_list_t *fslist)
@ -1511,29 +1511,27 @@ static int create_fsdev_cache(sigar_t *sigar)
sigar_cache_entry_t *ent;
struct stat sb;
int retval = stat(fsp->dir_name, &sb);
fs_kstat_t *fs_kstat;
iodev_t *iodev;
if (retval == 0) {
fs_kstat = malloc(sizeof(*fs_kstat));
iodev = malloc(sizeof(*iodev));
SIGAR_DISK_STATS_INIT(&iodev->disk);
/* e.g. sd9,g
* module == sd
* instance == 9
* partition == 8
*/
SIGAR_SSTRCPY(fs_kstat->module, paths->name);
fs_kstat->instance = paths->instance;
fs_kstat->partition = partition;
snprintf(iodev->name, sizeof(iodev->name), "%s%d,%c",
paths->name, paths->instance, partition);
ent = sigar_cache_get(sigar->fsdev, SIGAR_FSDEV_ID(sb));
ent->value = fs_kstat;
ent->value = iodev;
if (debug) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[fsdev] map %s -> %s%d,%c",
fsp->dir_name,
fs_kstat->module,
fs_kstat->instance,
fs_kstat->partition);
"[fsdev] map %s -> %s",
fsp->dir_name, iodev->name);
}
}
break;
@ -1549,7 +1547,7 @@ static int create_fsdev_cache(sigar_t *sigar)
return SIGAR_OK;
}
static int fs_kstat_read(sigar_t *sigar,
static int io_kstat_read(sigar_t *sigar,
sigar_disk_usage_t *disk,
kstat_t *ksp)
{
@ -1557,10 +1555,6 @@ static int fs_kstat_read(sigar_t *sigar,
kstat_read(sigar->kc, ksp, NULL);
if (ksp->ks_type != KSTAT_TYPE_IO) {
return EINVAL;
}
io = (kstat_io_t *)ksp->ks_data;
disk->reads = io->reads;
@ -1575,51 +1569,6 @@ static int fs_kstat_read(sigar_t *sigar,
return SIGAR_OK;
}
static int get_fs_kstat(sigar_t *sigar,
sigar_disk_usage_t *disk,
fs_kstat_t *fsk)
{
kstat_t *ksp, *first;
char *ptr;
if (sigar_kstat_update(sigar) == -1) {
return errno;
}
first = ksp =
kstat_lookup(sigar->kc, fsk->module, fsk->instance, NULL);
if (!ksp) {
return ENXIO;
}
/* first entry is for the entire disk.
* if there are no partitions specified,
* report metrics for the entire disk.
*/
if (!ksp->ks_next ||
!strEQ(ksp->ks_next->ks_module, fsk->module))
{
return fs_kstat_read(sigar, disk, first);
}
ksp = ksp->ks_next;
while (ksp) {
if (!strEQ(ksp->ks_module, fsk->module)) {
break; /* chain goes beyond our module */
}
if ((ptr = strchr(ksp->ks_name, ','))) {
if (*(ptr+1) == fsk->partition) {
return fs_kstat_read(sigar, disk, ksp);
}
}
ksp = ksp->ks_next;
}
return ENOENT;
}
int sigar_disk_usage_get(sigar_t *sigar, const char *name,
sigar_disk_usage_t *disk)
{
@ -1630,13 +1579,16 @@ int sigar_disk_usage_get(sigar_t *sigar, const char *name,
}
SIGAR_DISK_STATS_INIT(disk);
/* XXX optimize */
for (ksp = sigar->kc->kc_chain;
ksp;
ksp = ksp->ks_next)
{
if (ksp->ks_type != KSTAT_TYPE_IO) {
continue;
}
if (strEQ(ksp->ks_name, name)) {
return fs_kstat_read(sigar, disk, ksp);
return io_kstat_read(sigar, disk, ksp);
}
}
@ -1650,6 +1602,7 @@ int sigar_file_system_usage_get(sigar_t *sigar,
struct statvfs buf;
struct stat sb;
sigar_cache_entry_t *ent;
iodev_t *iodev;
if (statvfs(dirname, &buf) != 0) {
return errno;
@ -1678,8 +1631,8 @@ int sigar_file_system_usage_get(sigar_t *sigar,
if (ent->value == NULL) {
return SIGAR_OK;
}
get_fs_kstat(sigar, &fsusage->disk, (fs_kstat_t *)ent->value);
iodev = (iodev_t *)ent->value;
sigar_disk_usage_get(sigar, iodev->name, &fsusage->disk);
return SIGAR_OK;
}