static char *uuid_parse_dmidecode(FILE *file) {
char line[1024];
while (fgets(line, sizeof(line), file) != NULL) {
char *fields[4];
int fields_num;
strstripnewline(line);
/* Look for a line reading:
* UUID: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
*/
fields_num = strsplit(line, fields, STATIC_ARRAY_SIZE(fields));
if (fields_num != 2)
continue;
if (strcmp("UUID:", fields[0]) != 0)
continue;
if (!looks_like_a_uuid(fields[1]))
continue;
return strdup(fields[1]);
}
return NULL;
}
/* Reads a file which contains only a number (and optionally a trailing
* newline) and parses that number. */
static int sysfs_file_to_buffer(char const *dir, /* {{{ */
char const *power_supply,
char const *basename,
char *buffer, size_t buffer_size)
{
int status;
FILE *fp;
char filename[PATH_MAX];
ssnprintf (filename, sizeof (filename), "%s/%s/%s",
dir, power_supply, basename);
/* No file isn't the end of the world -- not every system will be
* reporting the same set of statistics */
if (access (filename, R_OK) != 0)
return ENOENT;
fp = fopen (filename, "r");
if (fp == NULL)
{
status = errno;
if (status != ENOENT)
{
char errbuf[1024];
WARNING ("battery plugin: fopen (%s) failed: %s", filename,
sstrerror (status, errbuf, sizeof (errbuf)));
}
return status;
}
if (fgets (buffer, buffer_size, fp) == NULL)
{
status = errno;
if (status != ENODEV)
{
char errbuf[1024];
WARNING ("battery plugin: fgets (%s) failed: %s", filename,
sstrerror (status, errbuf, sizeof (errbuf)));
}
fclose (fp);
return status;
}
strstripnewline (buffer);
fclose (fp);
return 0;
} /* }}} int sysfs_file_to_buffer */
static char *uuid_get_from_file(const char *path) {
FILE *file;
char uuid[UUID_PRINTABLE_NORMAL_LENGTH + 1] = "";
file = fopen(path, "r");
if (file == NULL)
return NULL;
if (!fgets(uuid, sizeof(uuid), file)) {
fclose(file);
return NULL;
}
fclose(file);
strstripnewline(uuid);
return strdup(uuid);
}
/* Reads a file which contains only a number (and optionally a trailing
* newline) and parses that number. */
static int sysfs_file_to_buffer(char const *dir, /* {{{ */
char const *power_supply, char const *basename,
char *buffer, size_t buffer_size) {
char filename[PATH_MAX];
int status;
ssnprintf(filename, sizeof(filename), "%s/%s/%s", dir, power_supply,
basename);
status = (int)read_file_contents(filename, buffer, buffer_size - 1);
if (status < 0)
return status;
buffer[status] = '\0';
strstripnewline(buffer);
return 0;
} /* }}} int sysfs_file_to_buffer */
/*
* This callback reads the user/system CPU time for each cgroup.
*/
static int read_cpuacct_procs(const char *dirname, char const *cgroup_name,
void *user_data) {
char abs_path[PATH_MAX];
struct stat statbuf;
char buf[1024];
int status;
FILE *fh;
if (ignorelist_match(il_cgroup, cgroup_name))
return (0);
ssnprintf(abs_path, sizeof(abs_path), "%s/%s", dirname, cgroup_name);
status = lstat(abs_path, &statbuf);
if (status != 0) {
ERROR("cgroups plugin: stat (\"%s\") failed.", abs_path);
return (-1);
}
/* We are only interested in directories, so skip everything else. */
if (!S_ISDIR(statbuf.st_mode))
return (0);
ssnprintf(abs_path, sizeof(abs_path), "%s/%s/cpuacct.stat", dirname,
cgroup_name);
fh = fopen(abs_path, "r");
if (fh == NULL) {
char errbuf[1024];
ERROR("cgroups plugin: fopen (\"%s\") failed: %s", abs_path,
sstrerror(errno, errbuf, sizeof(errbuf)));
return (-1);
}
while (fgets(buf, sizeof(buf), fh) != NULL) {
char *fields[8];
int numfields = 0;
char *key;
size_t key_len;
value_t value;
/* Expected format:
*
* user: 12345
* system: 23456
*
* Or:
*
* user 12345
* system 23456
*/
strstripnewline(buf);
numfields = strsplit(buf, fields, STATIC_ARRAY_SIZE(fields));
if (numfields != 2)
continue;
key = fields[0];
key_len = strlen(key);
if (key_len < 2)
continue;
/* Strip colon off the first column, if found */
if (key[key_len - 1] == ':')
key[key_len - 1] = 0;
status = parse_value(fields[1], &value, DS_TYPE_DERIVE);
if (status != 0)
continue;
cgroups_submit_one(cgroup_name, key, value);
}
fclose(fh);
return (0);
} /* int read_cpuacct_procs */