/******************************************************************************
* *
* Comments: Translate device name to the one used internally by kernel. The *
* translation is done based on minor and major device numbers *
* listed in INFO_FILE_NAME . If the names differ it is usually an *
* LVM device which is listed in kernel device mapper. *
* *
******************************************************************************/
static int get_kernel_devname(const char *devname, char *kernel_devname, size_t max_kernel_devname_len)
{
FILE *f;
char tmp[MAX_STRING_LEN], name[MAX_STRING_LEN], dev_path[MAX_STRING_LEN];
int ret = FAIL;
zbx_uint64_t ds[ZBX_DSTAT_MAX], rdev_major, rdev_minor;
zbx_stat_t dev_st;
if ('\0' == *devname)
return ret;
*dev_path = '\0';
if (0 != strncmp(devname, ZBX_DEV_PFX, ZBX_CONST_STRLEN(ZBX_DEV_PFX)))
strscpy(dev_path, ZBX_DEV_PFX);
strscat(dev_path, devname);
if (zbx_stat(dev_path, &dev_st) < 0 || NULL == (f = fopen(INFO_FILE_NAME, "r")))
return ret;
while (NULL != fgets(tmp, sizeof(tmp), f))
{
PARSE(tmp);
if (major(dev_st.st_rdev) != rdev_major || minor(dev_st.st_rdev) != rdev_minor)
continue;
zbx_strlcpy(kernel_devname, name, max_kernel_devname_len);
ret = SUCCEED;
break;
}
zbx_fclose(f);
return ret;
}
int get_diskstat(const char *devname, zbx_uint64_t *dstat)
{
FILE *f;
char tmp[MAX_STRING_LEN], name[MAX_STRING_LEN], dev_path[MAX_STRING_LEN];
int i, ret = FAIL, dev_exists = FAIL;
zbx_uint64_t ds[ZBX_DSTAT_MAX], rdev_major, rdev_minor;
zbx_stat_t dev_st;
int found = 0;
for (i = 0; i < ZBX_DSTAT_MAX; i++)
dstat[i] = (zbx_uint64_t)__UINT64_C(0);
if (NULL != devname && '\0' != *devname && 0 != strcmp(devname, "all"))
{
*dev_path = '\0';
if (0 != strncmp(devname, ZBX_DEV_PFX, ZBX_CONST_STRLEN(ZBX_DEV_PFX)))
strscpy(dev_path, ZBX_DEV_PFX);
strscat(dev_path, devname);
if (zbx_stat(dev_path, &dev_st) == 0)
dev_exists = SUCCEED;
}
if (NULL == (f = fopen(INFO_FILE_NAME, "r")))
return FAIL;
while (NULL != fgets(tmp, sizeof(tmp), f))
{
PARSE(tmp);
if (NULL != devname && '\0' != *devname && 0 != strcmp(devname, "all"))
{
if (0 != strcmp(name, devname))
{
if (SUCCEED != dev_exists
|| major(dev_st.st_rdev) != rdev_major
|| minor(dev_st.st_rdev) != rdev_minor)
continue;
}
else
found = 1;
}
dstat[ZBX_DSTAT_R_OPER] += ds[ZBX_DSTAT_R_OPER];
dstat[ZBX_DSTAT_R_SECT] += ds[ZBX_DSTAT_R_SECT];
dstat[ZBX_DSTAT_W_OPER] += ds[ZBX_DSTAT_W_OPER];
dstat[ZBX_DSTAT_W_SECT] += ds[ZBX_DSTAT_W_SECT];
ret = SUCCEED;
if (1 == found)
break;
}
zbx_fclose(f);
return ret;
}
int zbx_is_regular_file(const char *path)
{
zbx_stat_t st;
if (0 == zbx_stat(path, &st) && 0 != S_ISREG(st.st_mode))
return SUCCEED;
return FAIL;
}
/******************************************************************************
* *
* Function: process_log *
* *
* Purpose: Get message from logfile WITHOUT rotation *
* *
* Parameters: filename - logfile name *
* lastlogsize - offset for message *
* value - pointer for logged message *
* *
* Return value: returns SUCCEED on successful reading, *
* FAIL on other cases *
* *
* Author: Eugene Grigorjev *
* *
* Comments: *
* This function allocates memory for 'value', because use zbx_free. *
* Return SUCCEED and NULL value if end of file received. *
* *
******************************************************************************/
int process_log(char *filename, long *lastlogsize, char **value, const char *encoding)
{
int f;
struct stat buf;
int nbytes, ret = FAIL;
char buffer[MAX_BUFFER_LEN];
assert(filename);
assert(lastlogsize);
assert(value);
assert(encoding);
zabbix_log(LOG_LEVEL_DEBUG, "In process_log() filename:'%s' lastlogsize:%li", filename, *lastlogsize);
/* handling of file shrinking */
if (0 != zbx_stat(filename, &buf))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot stat [%s]: %s", filename, zbx_strerror(errno));
return ret;
}
if (buf.st_size < *lastlogsize)
*lastlogsize = 0;
if (-1 == (f = zbx_open(filename, O_RDONLY)))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot open [%s]: %s", filename, zbx_strerror(errno));
return ret;
}
if ((off_t)-1 != lseek(f, (off_t)*lastlogsize, SEEK_SET))
{
if (-1 != (nbytes = zbx_read(f, buffer, sizeof(buffer), encoding)))
{
if (0 != nbytes)
{
*lastlogsize += nbytes;
*value = convert_to_utf8(buffer, nbytes, encoding);
zbx_rtrim(*value, "\r\n ");
}
ret = SUCCEED;
}
else
zabbix_log(LOG_LEVEL_WARNING, "cannot read from [%s]: %s", filename, zbx_strerror(errno));
}
else
zabbix_log(LOG_LEVEL_WARNING, "cannot set position to [%li] for [%s]: %s", *lastlogsize, filename, zbx_strerror(errno));
close(f);
return ret;
}
/******************************************************************************
* *
* Function: proc_get_process_uid *
* *
* Purpose: returns process user identifier *
* *
* Parameters: pid - [IN] the process identifier *
* uid - [OUT] the user identifier *
* *
* Return value: SUCCEED *
* FAIL *
* *
******************************************************************************/
static int proc_get_process_uid(pid_t pid, uid_t *uid)
{
char tmp[MAX_STRING_LEN];
zbx_stat_t st;
zbx_snprintf(tmp, sizeof(tmp), "/proc/%d", (int)pid);
if (0 != zbx_stat(tmp, &st))
return FAIL;
*uid = st.st_uid;
return SUCCEED;
}
/******************************************************************************
* *
* Function: open_trap_file *
* *
* Purpose: open the trap file and get it's node number *
* *
* Return value: file descriptor of the opened file or -1 otherwise *
* *
* Author: Rudolfs Kreicbergs *
* *
******************************************************************************/
static int open_trap_file()
{
zbx_stat_t file_buf;
if (-1 == (trap_fd = open(CONFIG_SNMPTRAP_FILE, O_RDONLY)))
{
if (ENOENT != errno) /* file exists but cannot be opened */
zabbix_log(LOG_LEVEL_CRIT, "cannot open [%s]: %s", CONFIG_SNMPTRAP_FILE, zbx_strerror(errno));
}
else if (0 != zbx_stat(CONFIG_SNMPTRAP_FILE, &file_buf))
{
zabbix_log(LOG_LEVEL_CRIT, "cannot stat [%s]: %s", CONFIG_SNMPTRAP_FILE, zbx_strerror(errno));
close_trap_file();
}
else
trap_ino = file_buf.st_ino; /* a new file was opened */
return trap_fd;
}
/******************************************************************************
* *
* Function: open_trap_file *
* *
* Purpose: open the trap file and get it's node number *
* *
* Return value: file descriptor of the opened file or -1 otherwise *
* *
* Author: Rudolfs Kreicbergs *
* *
******************************************************************************/
static int open_trap_file()
{
zbx_stat_t file_buf;
if (0 != zbx_stat(CONFIG_SNMPTRAP_FILE, &file_buf))
{
zabbix_log(LOG_LEVEL_CRIT, "cannot stat SNMP trapper file \"%s\": %s", CONFIG_SNMPTRAP_FILE,
zbx_strerror(errno));
goto out;
}
if (ZBX_SNMP_TRAPFILE_MAX_SIZE <= (zbx_uint64_t)file_buf.st_size)
{
if (0 == overflow_warning)
{
zabbix_log(LOG_LEVEL_CRIT, "cannot process SNMP trapper file \"%s\":"
" file size exceeds the maximum supported size of 2 GB",
CONFIG_SNMPTRAP_FILE);
overflow_warning = 1;
}
goto out;
}
overflow_warning = 0;
if (-1 == (trap_fd = open(CONFIG_SNMPTRAP_FILE, O_RDONLY)))
{
if (ENOENT != errno) /* file exists but cannot be opened */
{
zabbix_log(LOG_LEVEL_CRIT, "cannot open SNMP trapper file \"%s\": %s", CONFIG_SNMPTRAP_FILE,
zbx_strerror(errno));
}
goto out;
}
trap_ino = file_buf.st_ino; /* a new file was opened */
out:
return trap_fd;
}
/******************************************************************************
* *
* Function: get_latest_data *
* *
* Purpose: Open the latest trap file. If the current file has been rotated, *
* process that and then open the latest file. *
* *
* Return value: SUCCEED - there are new traps to be parsed *
* FAIL - there are no new traps or trap file does not exist *
* *
* Author: Rudolfs Kreicbergs *
* *
******************************************************************************/
static int get_latest_data()
{
zbx_stat_t file_buf;
if (-1 != trap_fd) /* a trap file is already open */
{
if (0 != zbx_stat(CONFIG_SNMPTRAP_FILE, &file_buf))
{
/* file might have been renamed or deleted, process the current file */
if (ENOENT != errno)
{
zabbix_log(LOG_LEVEL_CRIT, "cannot stat [%s]: %s",
CONFIG_SNMPTRAP_FILE, zbx_strerror(errno));
}
read_traps();
close_trap_file();
}
else if (file_buf.st_ino != trap_ino || file_buf.st_size < trap_lastsize)
{
/* file has been rotated, process the current file */
read_traps();
close_trap_file();
}
else if (file_buf.st_size == trap_lastsize)
{
return FAIL; /* no new traps */
}
}
if (-1 == trap_fd && -1 == open_trap_file())
return FAIL;
return SUCCEED;
}
/******************************************************************************
* *
* Function: get_latest_data *
* *
* Purpose: Open the latest trap file. If the current file has been rotated, *
* process that and then open the latest file. *
* *
* Return value: SUCCEED - there are new traps to be parsed *
* FAIL - there are no new traps or trap file does not exist *
* *
* Author: Rudolfs Kreicbergs *
* *
******************************************************************************/
static int get_latest_data()
{
zbx_stat_t file_buf;
if (-1 != trap_fd) /* a trap file is already open */
{
if (0 != zbx_stat(CONFIG_SNMPTRAP_FILE, &file_buf))
{
/* file might have been renamed or deleted, process the current file */
if (ENOENT != errno)
{
zabbix_log(LOG_LEVEL_CRIT, "cannot stat SNMP trapper file \"%s\": %s",
CONFIG_SNMPTRAP_FILE, zbx_strerror(errno));
}
while (0 < read_traps())
;
if (0 != offset)
parse_traps(1);
close_trap_file();
}
else if (ZBX_SNMP_TRAPFILE_MAX_SIZE <= (zbx_uint64_t)file_buf.st_size)
{
close_trap_file();
}
else if (file_buf.st_ino != trap_ino || file_buf.st_size < trap_lastsize)
{
/* file has been rotated, process the current file */
while (0 < read_traps())
;
if (0 != offset)
parse_traps(1);
close_trap_file();
}
else if (file_buf.st_size == trap_lastsize)
{
if (1 == force)
{
parse_traps(1);
force = 0;
}
else if (0 != offset && 0 == force)
{
force = 1;
}
return FAIL; /* no new traps */
}
}
force = 0;
if (-1 == trap_fd && -1 == open_trap_file())
return FAIL;
return SUCCEED;
}
int PROC_MEM(AGENT_REQUEST *request, AGENT_RESULT *result)
{
DIR *dir;
int proc;
struct dirent *entries;
zbx_stat_t buf;
struct passwd *usrinfo;
struct prpsinfo psinfo;
char filename[MAX_STRING_LEN];
char *procname, *proccomm, *param;
double memsize = -1;
int pgsize = getpagesize();
int proccount = 0, do_task;
pid_t curr_pid = getpid();
if (4 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
procname = get_rparam(request, 0);
param = get_rparam(request, 1);
if (NULL != param && '\0' != *param)
{
if (NULL == (usrinfo = getpwnam(param)))
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot obtain user information."));
return SYSINFO_RET_FAIL;
}
}
else
usrinfo = NULL;
param = get_rparam(request, 2);
if (NULL == param || '\0' == *param || 0 == strcmp(param, "sum")) /* default parameter */
do_task = ZBX_DO_SUM;
else if (0 == strcmp(param, "avg"))
do_task = ZBX_DO_AVG;
else if (0 == strcmp(param, "max"))
do_task = ZBX_DO_MAX;
else if (0 == strcmp(param, "min"))
do_task = ZBX_DO_MIN;
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid third parameter."));
return SYSINFO_RET_FAIL;
}
proccomm = get_rparam(request, 3);
if (NULL == (dir = opendir("/proc")))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot open /proc: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
while (NULL != (entries = readdir(dir)))
{
strscpy(filename, "/proc/");
zbx_strlcat(filename, entries->d_name, MAX_STRING_LEN);
if (0 == zbx_stat(filename, &buf))
{
proc = open(filename, O_RDONLY);
if (-1 == proc)
goto lbl_skip_procces;
if (-1 == ioctl(proc, PIOCPSINFO, &psinfo))
goto lbl_skip_procces;
/* Self process information. It leads to incorrect results for proc.mem[zabbix_agentd]. */
if (psinfo.pr_pid == curr_pid)
goto lbl_skip_procces;
if (NULL != procname && '\0' != *procname)
if (0 == strcmp(procname, psinfo.pr_fname))
goto lbl_skip_procces;
if (NULL != usrinfo)
if (usrinfo->pw_uid != psinfo.pr_uid)
goto lbl_skip_procces;
if (NULL != proccomm && '\0' != *proccomm)
if (NULL == zbx_regexp_match(psinfo.pr_psargs, proccomm, NULL))
goto lbl_skip_procces;
proccount++;
if (0 > memsize) /* first initialization */
{
memsize = (double)(psinfo.pr_rssize * pgsize);
}
else
{
if (ZBX_DO_MAX == do_task)
memsize = MAX(memsize, (double)(psinfo.pr_rssize * pgsize));
else if (ZBX_DO_MIN == do_task)
memsize = MIN(memsize, (double)(psinfo.pr_rssize * pgsize));
else /* SUM */
memsize += (double)(psinfo.pr_rssize * pgsize);
}
lbl_skip_procces:
if (-1 != proc)
close(proc);
}
}
closedir(dir);
if (0 > memsize)
{
/* incorrect process name */
memsize = 0;
}
if (ZBX_DO_AVG == do_task)
SET_DBL_RESULT(result, 0 == proccount ? 0 : memsize / (double)proccount);
else
SET_UI64_RESULT(result, memsize);
return SYSINFO_RET_OK;
}
/******************************************************************************
* *
* Function: process_logrt *
* *
* Purpose: Get message from logfile with rotation *
* *
* Parameters: filename - logfile name (regular expression with a path) *
* lastlogsize - offset for message *
* mtime - last modification time of the file *
* value - pointer for logged message *
* *
* Return value: returns SUCCEED on successful reading, *
* FAIL on other cases *
* *
* Author: Dmitry Borovikov (logrotation) *
* *
* Comments: *
* This function allocates memory for 'value', because use zbx_free. *
* Return SUCCEED and NULL value if end of file received. *
* *
******************************************************************************/
int process_logrt(char *filename, long *lastlogsize, int *mtime, char **value, const char *encoding)
{
int i = 0, nbytes, ret = FAIL, logfiles_num = 0, logfiles_alloc = 0, fd = 0, length = 0, j = 0;
char buffer[MAX_BUFFER_LEN], *directory = NULL, *format = NULL, *logfile_candidate = NULL;
struct stat file_buf;
struct st_logfile *logfiles = NULL;
#ifdef _WINDOWS
char *find_path = NULL;
intptr_t find_handle;
struct _finddata_t find_data;
#else
DIR *dir = NULL;
struct dirent *d_ent = NULL;
#endif
zabbix_log(LOG_LEVEL_DEBUG, "In process_logrt() filename [%s] lastlogsize [%li] mtime [%d]",
filename, *lastlogsize, *mtime);
/* splitting filename */
if (SUCCEED != split_filename(filename, &directory, &format))
{
zabbix_log(LOG_LEVEL_WARNING, "filename [%s] does not contain a valid directory and/or format", filename);
return FAIL;
}
#ifdef _WINDOWS
/* try to "open" Windows directory */
find_path = zbx_dsprintf(find_path, "%s*", directory);
find_handle = _findfirst((const char *)find_path, &find_data);
if (-1 == find_handle)
{
zabbix_log(LOG_LEVEL_DEBUG, "cannot get entries from [%s] directory: %s", directory, zbx_strerror(errno));
zbx_free(directory);
zbx_free(format);
zbx_free(find_path);
return FAIL;
}
zbx_free(find_path);
zabbix_log(LOG_LEVEL_DEBUG, "we are in the Windows directory reading cycle");
do
{
logfile_candidate = zbx_dsprintf(logfile_candidate, "%s%s", directory, find_data.name);
if (-1 == zbx_stat(logfile_candidate, &file_buf) || !S_ISREG(file_buf.st_mode))
{
zabbix_log(LOG_LEVEL_DEBUG, "cannot process read entry [%s]", logfile_candidate);
}
else if (NULL != zbx_regexp_match(find_data.name, format, &length))
{
zabbix_log(LOG_LEVEL_DEBUG, "adding the file [%s] to logfiles", logfile_candidate);
add_logfile(&logfiles, &logfiles_alloc, &logfiles_num, find_data.name, (int)file_buf.st_mtime);
}
else
zabbix_log(LOG_LEVEL_DEBUG, "[%s] does not match [%s]", logfile_candidate, format);
zbx_free(logfile_candidate);
}
while (0 == _findnext(find_handle, &find_data));
#else /* _WINDOWS */
if (NULL == (dir = opendir(directory)))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot open directory [%s] for reading: %s", directory, zbx_strerror(errno));
zbx_free(directory);
zbx_free(format);
return FAIL;
}
zabbix_log(LOG_LEVEL_DEBUG, "we are in the *nix directory reading cycle");
while (NULL != (d_ent = readdir(dir)))
{
logfile_candidate = zbx_dsprintf(logfile_candidate, "%s%s", directory, d_ent->d_name);
if (-1 == zbx_stat(logfile_candidate, &file_buf) || !S_ISREG(file_buf.st_mode))
{
zabbix_log(LOG_LEVEL_DEBUG, "cannot process read entry [%s]", logfile_candidate);
}
else if (NULL != zbx_regexp_match(d_ent->d_name, format, &length))
{
zabbix_log(LOG_LEVEL_DEBUG, "adding the file [%s] to logfiles", logfile_candidate);
add_logfile(&logfiles, &logfiles_alloc, &logfiles_num, d_ent->d_name, (int)file_buf.st_mtime);
}
else
zabbix_log(LOG_LEVEL_DEBUG, "[%s] does not match [%s]", logfile_candidate, format);
zbx_free(logfile_candidate);
}
#endif /*_WINDOWS*/
/* find the oldest file that match */
for (i = 0; i < logfiles_num; i++)
{
if (logfiles[i].mtime < *mtime)
continue; /* not interested in mtimes less than the given mtime */
else
break; /* the first occurrence is found */
}
/* escaping those with the same mtime, taking the latest one (without exceptions!) */
for (j = i + 1; j < logfiles_num; j++)
{
if (logfiles[j].mtime == logfiles[i].mtime)
i = j; /* moving to the newer one */
else
break; /* all next mtimes are bigger */
}
/* if all mtimes are less than the given one, take the latest file from existing ones */
if (0 < logfiles_num && i == logfiles_num)
i = logfiles_num - 1; /* i cannot be bigger than logfiles_num */
/* processing matched or moving to the newer one and repeating the cycle */
for ( ; i < logfiles_num; i++)
{
logfile_candidate = zbx_dsprintf(logfile_candidate, "%s%s", directory, logfiles[i].filename);
if (0 != zbx_stat(logfile_candidate, &file_buf))/* situation could have changed */
{
zabbix_log(LOG_LEVEL_WARNING, "cannot stat [%s]: %s", logfile_candidate, zbx_strerror(errno));
break; /* must return, situation could have changed */
}
*mtime = (int)file_buf.st_mtime; /* must contain the latest mtime as possible */
if (file_buf.st_size < *lastlogsize)
{
*lastlogsize = 0; /* maintain backward compatibility */
}
if (-1 == (fd = zbx_open(logfile_candidate, O_RDONLY)))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot open [%s]: %s", logfile_candidate, zbx_strerror(errno));
break; /* must return, situation could have changed */
}
if ((off_t)-1 != lseek(fd, (off_t)*lastlogsize, SEEK_SET))
{
if (-1 != (nbytes = zbx_read(fd, buffer, sizeof(buffer), encoding)))
{
if (0 != nbytes)
{
*lastlogsize += nbytes;
*value = convert_to_utf8(buffer, nbytes, encoding);
zbx_rtrim(*value, "\r\n ");
ret = SUCCEED;
break; /* return at this point */
}
else /* EOF is reached, but there can be other files to try reading from */
{
if (i == logfiles_num - 1)
{
ret = SUCCEED; /* EOF of the the most current file is reached */
break;
}
else
{
zbx_free(logfile_candidate);
*lastlogsize = 0;
close(fd);
continue; /* try to read from more current file */
}
}
}
else /* cannot read from the file */
{
zabbix_log(LOG_LEVEL_WARNING, "cannot read from [%s]: %s",
logfile_candidate, zbx_strerror(errno));
break; /* must return, situation could have changed */
}
}
else /* cannot position in the file */
{
zabbix_log(LOG_LEVEL_WARNING, "cannot set position to [%li] for [%s]: %s",
*lastlogsize, logfile_candidate, zbx_strerror(errno));
break; /* must return, situation could have changed */
}
} /* trying to read from logfiles */
if (0 == logfiles_num)
{
zabbix_log(LOG_LEVEL_WARNING, "there are no files matching [%s] in [%s]",
format, directory);
}
free_logfiles(&logfiles, &logfiles_alloc, &logfiles_num);
if (0 != fd && -1 == close(fd))
{
zabbix_log(LOG_LEVEL_WARNING, "could not close the file [%s]: %s",
logfile_candidate, zbx_strerror(errno));
}
#ifdef _WINDOWS
if (0 != find_handle && -1 == _findclose(find_handle))
{
zabbix_log(LOG_LEVEL_WARNING, "could not close the find directory handle: %s",
zbx_strerror(errno));
}
#else
if (NULL != dir && -1 == closedir(dir))
{
zabbix_log(LOG_LEVEL_WARNING, "could not close directory [%s]: %s",
directory, zbx_strerror(errno));
}
#endif
zbx_free(logfile_candidate);
zbx_free(directory);
zbx_free(format);
return ret;
}
/******************************************************************************
* *
* Function: zbx_module_docker_discovery *
* *
* Purpose: container discovery *
* *
* Return value: SYSINFO_RET_FAIL - function failed, item will be marked *
* as not supported by zabbix *
* SYSINFO_RET_OK - success *
* *
******************************************************************************/
int zbx_module_docker_discovery(AGENT_REQUEST *request, AGENT_RESULT *result)
{
#include "zbxjson.h"
zabbix_log(LOG_LEVEL_DEBUG, "In zbx_module_docker_discovery()");
struct zbx_json j;
if (stat_dir == NULL && zbx_docker_stat_detect() == SYSINFO_RET_FAIL) {
zabbix_log(LOG_LEVEL_DEBUG, "docker.discovery is not available at the moment - no stat directory - empty discovery");
zbx_json_init(&j, ZBX_JSON_STAT_BUF_LEN);
zbx_json_addarray(&j, ZBX_PROTO_TAG_DATA);
zbx_json_close(&j);
SET_STR_RESULT(result, zbx_strdup(NULL, j.buffer));
zbx_json_free(&j);
return SYSINFO_RET_OK;
}
char line[MAX_STRING_LEN], *p, *mpoint, *mtype, container;
FILE *f;
DIR *dir;
zbx_stat_t sb;
char *file = NULL;
struct dirent *d;
char *cgroup = "cpuacct/";
size_t ddir_size = strlen(base_dir) + strlen(cgroup) + strlen(stat_dir) + 2;
char *ddir = malloc(ddir_size);
zbx_strlcpy(ddir, base_dir, ddir_size);
zbx_strlcat(ddir, cgroup, ddir_size);
zbx_strlcat(ddir, stat_dir, ddir_size);
if (NULL == (dir = opendir(ddir)))
{
zbx_error("%s: %s\n", ddir, zbx_strerror(errno));
}
zbx_json_init(&j, ZBX_JSON_STAT_BUF_LEN);
zbx_json_addarray(&j, ZBX_PROTO_TAG_DATA);
char scontainerid[13];
while (NULL != (d = readdir(dir)))
{
if(0 == strcmp(d->d_name, ".") || 0 == strcmp(d->d_name, ".."))
continue;
file = zbx_dsprintf(file, "%s/%s", ddir, d->d_name);
if (0 != zbx_stat(file, &sb) || 0 == S_ISDIR(sb.st_mode))
continue;
zbx_json_addobject(&j, NULL);
zbx_json_addstring(&j, "{#FCONTAINERID}", d->d_name, ZBX_JSON_TYPE_STRING);
zbx_strlcpy(scontainerid, d->d_name, 13);
zbx_json_addstring(&j, "{#SCONTAINERID}", scontainerid, ZBX_JSON_TYPE_STRING);
zbx_json_close(&j);
}
if (0 != closedir(dir))
{
zbx_error("%s: %s\n", ddir, zbx_strerror(errno));
}
zbx_json_close(&j);
SET_STR_RESULT(result, zbx_strdup(NULL, j.buffer));
zbx_json_free(&j);
return SYSINFO_RET_OK;
}
int PROC_MEM(AGENT_REQUEST *request, AGENT_RESULT *result)
{
char tmp[MAX_STRING_LEN], *procname, *proccomm, *param;
DIR *dir;
struct dirent *entries;
zbx_stat_t buf;
struct passwd *usrinfo;
psinfo_t psinfo; /* In the correct procfs.h, the structure name is psinfo_t */
int fd = -1;
zbx_uint64_t value = 0;
int do_task;
double memsize = 0;
zbx_uint64_t proccount = 0;
if (4 < request->nparam)
return SYSINFO_RET_FAIL;
procname = get_rparam(request, 0);
param = get_rparam(request, 1);
if (NULL != param && '\0' != *param)
{
if (NULL == (usrinfo = getpwnam(param))) /* incorrect user name */
return SYSINFO_RET_FAIL;
}
else
usrinfo = NULL;
param = get_rparam(request, 2);
if (NULL == param || '\0' == *param || 0 == strcmp(param, "sum"))
do_task = DO_SUM;
else if (0 == strcmp(param, "avg"))
do_task = DO_AVG;
else if (0 == strcmp(param, "max"))
do_task = DO_MAX;
else if (0 == strcmp(param, "min"))
do_task = DO_MIN;
else
return SYSINFO_RET_FAIL;
proccomm = get_rparam(request, 3);
if (NULL == (dir = opendir("/proc")))
return SYSINFO_RET_FAIL;
while (NULL != (entries = readdir(dir)))
{
if (-1 != fd)
{
close(fd);
fd = -1;
}
zbx_snprintf(tmp, sizeof(tmp), "/proc/%s/psinfo", entries->d_name);
if (0 != zbx_stat(tmp, &buf))
continue;
if (-1 == (fd = open(tmp, O_RDONLY)))
continue;
if (-1 == read(fd, &psinfo, sizeof(psinfo)))
continue;
if (NULL != procname && '\0' != *procname && 0 != strcmp(procname, psinfo.pr_fname))
continue;
if (NULL != usrinfo && usrinfo->pw_uid != psinfo.pr_uid)
continue;
if (NULL != proccomm && '\0' != *proccomm && NULL == zbx_regexp_match(psinfo.pr_psargs, proccomm, NULL))
continue;
value = psinfo.pr_size;
value <<= 10; /* kB to Byte */
if (0 == proccount++)
memsize = value;
else
{
if (do_task == DO_MAX)
memsize = MAX(memsize, value);
else if (do_task == DO_MIN)
memsize = MIN(memsize, value);
else
memsize += value;
}
}
closedir(dir);
if (-1 != fd)
close(fd);
if (do_task == DO_AVG)
{
SET_DBL_RESULT(result, proccount == 0 ? 0 : memsize / proccount);
}
else
{
SET_UI64_RESULT(result, memsize);
}
return SYSINFO_RET_OK;
}
int PROC_NUM(AGENT_REQUEST *request, AGENT_RESULT *result)
{
char tmp[MAX_STRING_LEN], *procname, *proccomm, *param;
DIR *dir;
struct dirent *entries;
zbx_stat_t buf;
struct passwd *usrinfo;
psinfo_t psinfo; /* In the correct procfs.h, the structure name is psinfo_t */
int fd = -1;
int zbx_proc_stat;
zbx_uint64_t proccount = 0;
if (4 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
procname = get_rparam(request, 0);
param = get_rparam(request, 1);
if (NULL != param && '\0' != *param)
{
errno = 0;
if (NULL == (usrinfo = getpwnam(param)))
{
if (0 == errno)
SET_MSG_RESULT(result, zbx_strdup(NULL, "Specified user does not exist."));
else
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain user information: %s",
zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
}
else
usrinfo = NULL;
param = get_rparam(request, 2);
if (NULL == param || '\0' == *param || 0 == strcmp(param, "all"))
zbx_proc_stat = ZBX_PROC_STAT_ALL;
else if (0 == strcmp(param, "run"))
zbx_proc_stat = ZBX_PROC_STAT_RUN;
else if (0 == strcmp(param, "sleep"))
zbx_proc_stat = ZBX_PROC_STAT_SLEEP;
else if (0 == strcmp(param, "zomb"))
zbx_proc_stat = ZBX_PROC_STAT_ZOMB;
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid third parameter."));
return SYSINFO_RET_FAIL;
}
proccomm = get_rparam(request, 3);
if (NULL == (dir = opendir("/proc")))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot open /proc: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
while (NULL != (entries = readdir(dir)))
{
if (-1 != fd)
{
close(fd);
fd = -1;
}
zbx_snprintf(tmp, sizeof(tmp), "/proc/%s/psinfo", entries->d_name);
if (0 != zbx_stat(tmp, &buf))
continue;
if (-1 == (fd = open(tmp, O_RDONLY)))
continue;
if (-1 == read(fd, &psinfo, sizeof(psinfo)))
continue;
if (NULL != procname && '\0' != *procname && 0 != strcmp(procname, psinfo.pr_fname))
continue;
if (NULL != usrinfo && usrinfo->pw_uid != psinfo.pr_uid)
continue;
if (FAIL == check_procstate(&psinfo, zbx_proc_stat))
continue;
if (NULL != proccomm && '\0' != *proccomm && NULL == zbx_regexp_match(psinfo.pr_psargs, proccomm, NULL))
continue;
proccount++;
}
closedir(dir);
if (-1 != fd)
close(fd);
SET_UI64_RESULT(result, proccount);
return SYSINFO_RET_OK;
}
int PROC_NUM(AGENT_REQUEST *request, AGENT_RESULT *result)
{
DIR *dir;
int proc;
struct dirent *entries;
zbx_stat_t buf;
struct passwd *usrinfo;
struct prpsinfo psinfo;
char filename[MAX_STRING_LEN];
char *procname, *proccomm, *param;
int proccount = 0, zbx_proc_stat;
pid_t curr_pid = getpid();
if (4 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
procname = get_rparam(request, 0);
param = get_rparam(request, 1);
if (NULL != param && '\0' != *param)
{
if (NULL == (usrinfo = getpwnam(param)))
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot obtain user information."));
return SYSINFO_RET_FAIL;
}
}
else
usrinfo = NULL;
param = get_rparam(request, 2);
if (NULL == param || '\0' == *param || 0 == strcmp(param, "all"))
zbx_proc_stat = -1;
else if (0 == strcmp(param, "run"))
zbx_proc_stat = PR_SRUN;
else if (0 == strcmp(param, "sleep"))
zbx_proc_stat = PR_SSLEEP;
else if (0 == strcmp(param, "zomb"))
zbx_proc_stat = PR_SZOMB;
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid third parameter."));
return SYSINFO_RET_FAIL;
}
proccomm = get_rparam(request, 3);
if (NULL == (dir = opendir("/proc")))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot open /proc: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
while (NULL != (entries = readdir(dir)))
{
strscpy(filename, "/proc/");
zbx_strlcat(filename, entries->d_name,MAX_STRING_LEN);
if (0 == zbx_stat(filename, &buf))
{
proc = open(filename, O_RDONLY);
if (-1 == proc)
goto lbl_skip_procces;
if (-1 == ioctl(proc, PIOCPSINFO, &psinfo))
goto lbl_skip_procces;
/* Self process information. It leads to incorrect results for proc.num[zabbix_agentd]. */
if (psinfo.pr_pid == curr_pid)
goto lbl_skip_procces;
if (NULL != procname && '\0' != *procname)
if (0 != strcmp(procname, psinfo.pr_fname))
goto lbl_skip_procces;
if (NULL != usrinfo)
if (usrinfo->pw_uid != psinfo.pr_uid)
goto lbl_skip_procces;
if (-1 != zbx_proc_stat)
if (psinfo.pr_sname != zbx_proc_stat)
goto lbl_skip_procces;
if (NULL != proccomm && '\0' != *proccomm)
if (NULL == zbx_regexp_match(psinfo.pr_psargs, proccomm, NULL))
goto lbl_skip_procces;
proccount++;
lbl_skip_procces:
if (-1 != proc)
close(proc);
}
}
closedir(dir);
SET_UI64_RESULT(result, proccount);
return SYSINFO_RET_OK;
}
int PROC_MEM(AGENT_REQUEST *request, AGENT_RESULT *result)
{
char tmp[MAX_STRING_LEN], *procname, *proccomm, *param;
DIR *dir;
struct dirent *entries;
zbx_stat_t buf;
struct passwd *usrinfo;
psinfo_t psinfo; /* In the correct procfs.h, the structure name is psinfo_t */
int fd = -1;
zbx_uint64_t value = 0;
int do_task;
double memsize = 0;
zbx_uint64_t proccount = 0;
if (4 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
procname = get_rparam(request, 0);
param = get_rparam(request, 1);
if (NULL != param && '\0' != *param)
{
errno = 0;
if (NULL == (usrinfo = getpwnam(param)))
{
if (0 == errno)
SET_MSG_RESULT(result, zbx_strdup(NULL, "Specified user does not exist."));
else
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain user information: %s",
zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
}
else
usrinfo = NULL;
param = get_rparam(request, 2);
if (NULL == param || '\0' == *param || 0 == strcmp(param, "sum"))
do_task = ZBX_DO_SUM;
else if (0 == strcmp(param, "avg"))
do_task = ZBX_DO_AVG;
else if (0 == strcmp(param, "max"))
do_task = ZBX_DO_MAX;
else if (0 == strcmp(param, "min"))
do_task = ZBX_DO_MIN;
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid third parameter."));
return SYSINFO_RET_FAIL;
}
proccomm = get_rparam(request, 3);
if (NULL == (dir = opendir("/proc")))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot open /proc: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
while (NULL != (entries = readdir(dir)))
{
if (-1 != fd)
{
close(fd);
fd = -1;
}
zbx_snprintf(tmp, sizeof(tmp), "/proc/%s/psinfo", entries->d_name);
if (0 != zbx_stat(tmp, &buf))
continue;
if (-1 == (fd = open(tmp, O_RDONLY)))
continue;
if (-1 == read(fd, &psinfo, sizeof(psinfo)))
continue;
if (NULL != procname && '\0' != *procname && 0 != strcmp(procname, psinfo.pr_fname))
continue;
if (NULL != usrinfo && usrinfo->pw_uid != psinfo.pr_uid)
continue;
if (NULL != proccomm && '\0' != *proccomm && NULL == zbx_regexp_match(psinfo.pr_psargs, proccomm, NULL))
continue;
value = psinfo.pr_size;
value <<= 10; /* kB to Byte */
if (0 == proccount++)
memsize = value;
else
{
if (ZBX_DO_MAX == do_task)
memsize = MAX(memsize, value);
else if (ZBX_DO_MIN == do_task)
memsize = MIN(memsize, value);
else
memsize += value;
}
}
closedir(dir);
if (-1 != fd)
close(fd);
if (ZBX_DO_AVG == do_task)
SET_DBL_RESULT(result, proccount == 0 ? 0 : memsize / proccount);
else
SET_UI64_RESULT(result, memsize);
return SYSINFO_RET_OK;
}
/******************************************************************************
* *
* Function: split_filename *
* *
* Purpose: separates filename to directory and to file format (regexp) *
* *
* Parameters: filename - first parameter of log[] item *
* *
* Return value: SUCCEED - on successful splitting *
* FAIL - on unable to split sensibly *
* *
* Author: Dmitry Borovikov *
* *
* Comments: Allocates memory for "directory" and "format" only on success. *
* On fail, memory, allocated for "directory" and "format", *
* is freed. *
* *
******************************************************************************/
static int split_filename(const char *filename, char **directory, char **format)
{
const char *__function_name = "split_filename";
const char *separator = NULL;
struct stat buf;
#ifdef _WINDOWS
size_t sz;
#endif/*_WINDOWS*/
zabbix_log(LOG_LEVEL_DEBUG, "In %s() filename:'%s'",
__function_name, filename);
assert(directory && !*directory);
assert(format && !*format);
if (!filename || *filename == '\0')
{
zabbix_log(LOG_LEVEL_DEBUG, "Cannot split empty path!");
return FAIL;
}
/* special processing for Windows world, since PATH part cannot be simply divided from REGEXP part (file format) */
#ifdef _WINDOWS
for (sz = strlen(filename) - 1, separator = &filename[sz]; separator >= filename; separator--)
{
if (PATH_SEPARATOR != *separator)
continue;
zabbix_log(LOG_LEVEL_DEBUG, "%s() %s",
__function_name, filename);
zabbix_log(LOG_LEVEL_DEBUG, "%s() %*s",
__function_name, separator - filename + 1, "^");
/* separator must be relative delimiter of the original filename */
if (FAIL == split_string(filename, separator, directory, format))
{
zabbix_log(LOG_LEVEL_DEBUG, "Cannot split [%s].", filename);
return FAIL;
}
sz = strlen(*directory);
/* Windows world verification */
if (sz + 1 > MAX_PATH)
{
zabbix_log(LOG_LEVEL_DEBUG, "Directory path is too long. Cannot proceed.");
zbx_free(*directory);
zbx_free(*format);
return FAIL;
}
/* Windows "stat" functions cannot get info about directories with '\' at the end of the path, */
/* except for root directories 'x:\' */
if (0 == zbx_stat(*directory, &buf) && S_ISDIR(buf.st_mode))
break;
if (sz > 0 && PATH_SEPARATOR == (*directory)[sz - 1])
{
(*directory)[sz - 1] = '\0';
if (0 == zbx_stat(*directory, &buf) && S_ISDIR(buf.st_mode))
{
(*directory)[sz - 1] = PATH_SEPARATOR;
break;
}
}
zabbix_log(LOG_LEVEL_DEBUG, "Cannot find [%s] directory.", *directory);
zbx_free(*directory);
zbx_free(*format);
}
if (separator < filename)
return FAIL;
#else/* _WINDOWS */
separator = strrchr(filename, (int)PATH_SEPARATOR);
if (separator == NULL)
{
zabbix_log(LOG_LEVEL_DEBUG, "Filename [%s] does not contain any path separator [%c].", filename, PATH_SEPARATOR);
return FAIL;
}
if (SUCCEED != split_string(filename, separator, directory, format))
{
zabbix_log(LOG_LEVEL_DEBUG, "Filename [%s] cannot be sensibly split by [%c].", filename, PATH_SEPARATOR);
return FAIL;
}
/* Checking whether directory exists. */
if (-1 == zbx_stat(*directory, &buf))
{
zabbix_log(LOG_LEVEL_WARNING, "Directory [%s] cannot be found on the file system.", *directory);
zbx_free(*directory);
zbx_free(*format);
return FAIL;
}
/* Checking whether directory is really directory, not file. */
if (!S_ISDIR(buf.st_mode))
{
zabbix_log(LOG_LEVEL_WARNING, "Directory [%s] is a file. Cannot proceed.", *directory);
zbx_free(*directory);
zbx_free(*format);
return FAIL;
}
#endif/* _WINDOWS */
zabbix_log(LOG_LEVEL_DEBUG, "End %s() directory:'%s' format:'%s'",
__function_name, *directory, *format);
return SUCCEED;
}
