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[SIGAR-4] Add hook for using mirrored /proc/net/tcp file

This commit is contained in:
Doug MacEachern 2007-04-05 02:26:00 +00:00
parent 16a1273b70
commit be5ee7b600
2 changed files with 27 additions and 3 deletions
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29
src/os/linux/linux_sigar.c
View File

@ -168,6 +168,9 @@ int sigar_os_open(sigar_t **sigar)
(*sigar)->fsdev = NULL;
/* hook for using mirrored /proc/net/tcp file */
(*sigar)->proc_net = getenv("SIGAR_PROC_NET");
return SIGAR_OK;
}
@ -1817,12 +1820,32 @@ static int proc_net_read(sigar_net_connection_walker_t *walker,
const char *fname,
int type)
{
FILE *fp;
FILE *fp = NULL;
char buffer[8192];
char *ptr;
sigar_t *sigar = walker->sigar;
char *ptr = sigar->proc_net;
int flags = walker->flags;
if (!(fp = fopen(fname, "r"))) {
if (ptr) {
snprintf(buffer, sizeof(buffer),
"%s/%s", ptr,
fname + sizeof(PROC_FS_ROOT)-1);
if ((fp = fopen(buffer, "r"))) {
if (SIGAR_LOG_IS_DEBUG(sigar)) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[proc_net] using %s",
buffer);
}
}
else if (SIGAR_LOG_IS_DEBUG(sigar)) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[proc_net] cannot open %s",
buffer);
}
}
if (!(fp || (fp = fopen(fname, "r")))) {
return errno;
}

1
src/os/linux/sigar_os.h
View File

@ -67,6 +67,7 @@ struct sigar_t {
int lcpu;
linux_iostat_e iostat;
sigar_cache_t *fsdev;
char *proc_net;
};
#define HAVE_STRERROR_R