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diff --git a/src/common.c b/src/common.c
index 0b603fa876dcd9b823584fa355bd66087ab5a94b..cf2a63989f357600d3dc7aa011b551c90abf59f4 100644 (file)
--- a/src/common.c
+++ b/src/common.c
/**
* collectd - src/common.c
- * Copyright (C) 2005 Florian octo Forster
+ * Copyright (C) 2005,2006 Florian octo Forster
*
* This program is free software; you can redistribute it and/
* or modify it under the terms of the GNU General Public Li-
#include "common.h"
#include "utils_debug.h"
+#ifdef HAVE_MATH_H
+# include <math.h>
+#endif
+
+/* for ntohl and htonl */
+#if HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+
extern int operating_mode;
#ifdef HAVE_LIBKSTAT
extern kstat_ctl_t *kc;
#endif
-#ifdef HAVE_LIBRRD
-static char *rra_def[] =
-{
- "RRA:AVERAGE:0.2:6:1500",
- "RRA:AVERAGE:0.1:180:1680",
- "RRA:AVERAGE:0.1:2160:1520",
- "RRA:MIN:0.2:6:1500",
- "RRA:MIN:0.1:180:1680",
- "RRA:MIN:0.1:2160:1520",
- "RRA:MAX:0.2:6:1500",
- "RRA:MAX:0.1:180:1680",
- "RRA:MAX:0.1:2160:1520",
- NULL
-};
-static int rra_num = 9;
-#endif /* HAVE_LIBRRD */
-
void sstrncpy (char *d, const char *s, int len)
{
strncpy (d, s, len);
}
#endif
+ssize_t sread (int fd, void *buf, size_t count)
+{
+ char *ptr;
+ size_t nleft;
+ ssize_t status;
+
+ ptr = (char *) buf;
+ nleft = count;
+
+ while (nleft > 0)
+ {
+ status = read (fd, (void *) ptr, nleft);
+
+ if ((status < 0) && ((errno == EAGAIN) || (errno == EINTR)))
+ continue;
+
+ if (status < 0)
+ return (status);
+
+ if (status == 0)
+ {
+ DBG ("Received EOF from fd %i. "
+ "Closing fd and returning error.",
+ fd);
+ close (fd);
+ return (-1);
+ }
+
+ assert (nleft >= status);
+
+ nleft = nleft - status;
+ ptr = ptr + status;
+ }
+
+ return (0);
+}
+
+
+ssize_t swrite (int fd, const void *buf, size_t count)
+{
+ const char *ptr;
+ size_t nleft;
+ ssize_t status;
+
+ ptr = (const char *) buf;
+ nleft = count;
+
+ while (nleft > 0)
+ {
+ status = write (fd, (const void *) ptr, nleft);
+
+ if ((status < 0) && ((errno == EAGAIN) || (errno == EINTR)))
+ continue;
+
+ if (status < 0)
+ return (status);
+
+ nleft = nleft - status;
+ ptr = ptr + status;
+ }
+
+ return (0);
+}
+
int strsplit (char *string, char **fields, size_t size)
{
size_t i;
return (strlen (dst));
}
+int strsubstitute (char *str, char c_from, char c_to)
+{
+ int ret;
+
+ if (str == NULL)
+ return (-1);
+
+ ret = 0;
+ while (*str != '\0')
+ {
+ if (*str == c_from)
+ {
+ *str = c_to;
+ ret++;
+ }
+ str++;
+ }
+
+ return (ret);
+}
+
int escape_slashes (char *buf, int buf_len)
{
int i;
return (0);
}
-static int check_create_dir (const char *file_orig)
+int timeval_sub_timespec (struct timeval *tv0, struct timeval *tv1, struct timespec *ret)
+{
+ if ((tv0 == NULL) || (tv1 == NULL) || (ret == NULL))
+ return (-2);
+
+ if ((tv0->tv_sec < tv1->tv_sec)
+ || ((tv0->tv_sec == tv1->tv_sec) && (tv0->tv_usec < tv1->tv_usec)))
+ return (-1);
+
+ ret->tv_sec = tv0->tv_sec - tv1->tv_sec;
+ ret->tv_nsec = 1000 * ((long) (tv0->tv_usec - tv1->tv_usec));
+
+ if (ret->tv_nsec < 0)
+ {
+ assert (ret->tv_sec > 0);
+
+ ret->tv_nsec += 1000000000;
+ ret->tv_sec -= 1;
+ }
+
+ return (0);
+}
+
+int check_create_dir (const char *file_orig)
{
struct stat statbuf;
FILE *log;
int i;
+ if (check_create_dir (filename))
+ return (-1);
+
log = fopen (filename, "w");
if (log == NULL)
{
return (-1);
}
+ fprintf (log, "epoch");
for (i = 0; i < ds_num; i++)
{
char *name;
char *tmp;
- name = index (ds_def[i], ':');
+ name = strchr (ds_def[i], ':');
if (name == NULL)
{
syslog (LOG_WARNING, "Invalid DS definition '%s' for %s",
}
name += 1;
- tmp = index(name, ':');
+ tmp = strchr (name, ':');
if (tmp == NULL)
{
syslog (LOG_WARNING, "Invalid DS definition '%s' for %s",
return (-1);
}
- if (i != 0)
- fprintf (log, ":");
- fprintf(log, "%.*s", (tmp - name), name);
+ /* The `%.*s' is needed because there is no null-byte behind
+ * the name. */
+ fprintf(log, ",%.*s", (int) (tmp - name), name);
}
fprintf(log, "\n");
fclose(log);
return 0;
}
-static int log_update_file (char *host, char *file, char *values,
+int log_update_file (char *host, char *file, char *values,
char **ds_def, int ds_num)
{
char *tmp;
struct stat statbuf;
char full_file[1024];
+ /* Cook the values a bit: Substitute colons with commas */
+ strsubstitute (values, ':', ',');
+
/* host == NULL => local mode */
if (host != NULL)
{
strncpy (full_file, file, 1024);
tmp = full_file + strlen (full_file) - 4;
- assert (tmp > 0);
+ assert ((tmp != NULL) && (tmp > full_file));
/* Change the filename for logfiles. */
if (strncmp (tmp, ".rrd", 4) == 0)
time_t now;
struct tm *tm;
+ /* TODO: Find a way to minimize the calls to `localtime', since
+ * they are pretty expensive.. */
now = time (NULL);
tm = localtime (&now);
return (0);
} /* int log_update_file */
-#if HAVE_LIBRRD
-static int rrd_create_file (char *filename, char **ds_def, int ds_num)
-{
- char **argv;
- int argc;
- int i, j;
- int status = 0;
-
- if (check_create_dir (filename))
- return (-1);
-
- argc = ds_num + rra_num + 4;
-
- if ((argv = (char **) malloc (sizeof (char *) * (argc + 1))) == NULL)
- {
- syslog (LOG_ERR, "rrd_create failed: %s", strerror (errno));
- return (-1);
- }
-
- argv[0] = "create";
- argv[1] = filename;
- argv[2] = "-s";
- argv[3] = "10";
-
- j = 4;
- for (i = 0; i < ds_num; i++)
- argv[j++] = ds_def[i];
- for (i = 0; i < rra_num; i++)
- argv[j++] = rra_def[i];
- argv[j] = NULL;
-
- optind = 0; /* bug in librrd? */
- rrd_clear_error ();
- if (rrd_create (argc, argv) == -1)
- {
- syslog (LOG_ERR, "rrd_create failed: %s: %s", filename, rrd_get_error ());
- status = -1;
- }
-
- free (argv);
-
- return (status);
-}
-#endif /* HAVE_LIBRRD */
-
-int rrd_update_file (char *host, char *file, char *values,
- char **ds_def, int ds_num)
-{
-#if HAVE_LIBRRD
- struct stat statbuf;
- char full_file[1024];
- char *argv[4] = { "update", full_file, values, NULL };
-#endif /* HAVE_LIBRRD */
-
- /* I'd rather have a function `common_update_file' to make this
- * decission, but for that we'd need to touch all plugins.. */
- if (operating_mode == MODE_LOG)
- return (log_update_file (host, file, values,
- ds_def, ds_num));
-
-#if HAVE_LIBRRD
- /* host == NULL => local mode */
- if (host != NULL)
- {
- if (snprintf (full_file, 1024, "%s/%s", host, file) >= 1024)
- return (-1);
- }
- else
- {
- if (snprintf (full_file, 1024, "%s", file) >= 1024)
- return (-1);
- }
-
- if (stat (full_file, &statbuf) == -1)
- {
- if (errno == ENOENT)
- {
- if (rrd_create_file (full_file, ds_def, ds_num))
- return (-1);
- }
- else
- {
- syslog (LOG_ERR, "stat %s: %s", full_file, strerror (errno));
- return (-1);
- }
- }
- else if (!S_ISREG (statbuf.st_mode))
- {
- syslog (LOG_ERR, "stat %s: Not a regular file!", full_file);
- return (-1);
- }
-
- optind = 0; /* bug in librrd? */
- rrd_clear_error ();
- if (rrd_update (3, argv) == -1)
- {
- syslog (LOG_WARNING, "rrd_update failed: %s: %s", full_file, rrd_get_error ());
- return (-1);
- }
- return (0);
-/* #endif HAVE_LIBRRD */
-
-#else
- syslog (LOG_ERR, "`rrd_update_file' was called, but collectd isn't linked against librrd!");
- return (-1);
-#endif
-}
#ifdef HAVE_LIBKSTAT
int get_kstat (kstat_t **ksp_ptr, char *module, int instance, char *name)
return (retval);
}
#endif /* HAVE_LIBKSTAT */
+
+unsigned long long ntohll (unsigned long long n)
+{
+#if __BYTE_ORDER == __BIG_ENDIAN
+ return (n);
+#else
+ return (((unsigned long long) ntohl (n)) << 32) + ntohl (n >> 32);
+#endif
+}
+
+unsigned long long htonll (unsigned long long n)
+{
+#if __BYTE_ORDER == __BIG_ENDIAN
+ return (n);
+#else
+ return (((unsigned long long) htonl (n)) << 32) + htonl (n >> 32);
+#endif
+}