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#include <glibtop.h>
#include <glibtop/error.h>
#include "glibtop_private.h"
#include <glib.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <fcntl.h>
unsigned long long
get_scaled(const char *buffer, const char *key)
{
const char *ptr;
char *next;
unsigned long long value = 0;
if ((ptr = strstr(buffer, key)))
{
ptr += strlen(key);
value = strtoull(ptr, &next, 0);
if (strchr(next, 'k'))
value *= 1024;
else if (strchr(next, 'M'))
value *= 1024 * 1024;
}
return value;
}
char *
skip_token (const char *p)
{
p = next_token(p);
while (*p && !isspace(*p)) p++;
p = next_token(p);
return (char *)p;
}
/*
* Read functions
*/
enum TRY_FILE_TO_BUFFER
{
TRY_FILE_TO_BUFFER_OK = 0,
TRY_FILE_TO_BUFFER_OPEN = -1,
TRY_FILE_TO_BUFFER_READ = -2
};
int try_file_to_buffer(char *buffer, const char *format, ...)
{
char path[4096];
int fd;
ssize_t len;
va_list pa;
va_start(pa, format);
/* C99 also provides vsnprintf */
g_vsnprintf(path, sizeof path, format, pa);
va_end(pa);
buffer [0] = '\0';
if((fd = open (path, O_RDONLY)) < 0)
return TRY_FILE_TO_BUFFER_OPEN;
len = read (fd, buffer, BUFSIZ-1);
close (fd);
if (len < 0)
return TRY_FILE_TO_BUFFER_READ;
buffer [len] = '\0';
return TRY_FILE_TO_BUFFER_OK;
}
void
file_to_buffer(glibtop *server, char *buffer, const char *filename)
{
switch(try_file_to_buffer(buffer, filename))
{
case TRY_FILE_TO_BUFFER_OPEN:
glibtop_error_io_r (server, "open (%s)", filename);
case TRY_FILE_TO_BUFFER_READ:
glibtop_error_io_r (server, "read (%s)", filename);
}
}
unsigned long
get_boot_time(glibtop *server)
{
char buffer[BUFSIZ];
char *btime;
file_to_buffer(server, buffer, "/proc/stat");
btime = strstr(buffer, "btime");
g_return_val_if_fail(btime != NULL, 0UL);
btime = skip_token(btime);
return strtoul(btime, NULL, 10);
}
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