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/*
functions taken from samba4 for quick prototyping of ctdb. These are
not intended to remain part of ctdb
*/
#include "includes.h"
#include "system/time.h"
#include "system/filesys.h"
/**
return a zero timeval
*/
struct timeval timeval_zero(void)
{
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 0;
return tv;
}
/**
return True if a timeval is zero
*/
bool timeval_is_zero(const struct timeval *tv)
{
return tv->tv_sec == 0 && tv->tv_usec == 0;
}
/**
return a timeval for the current time
*/
struct timeval timeval_current(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return tv;
}
double timeval_elapsed(struct timeval *tv)
{
struct timeval tv2 = timeval_current();
return (tv2.tv_sec - tv->tv_sec) +
(tv2.tv_usec - tv->tv_usec)*1.0e-6;
}
/**
return a timeval struct with the given elements
*/
_PUBLIC_ struct timeval timeval_set(uint32_t secs, uint32_t usecs)
{
struct timeval tv;
tv.tv_sec = secs;
tv.tv_usec = usecs;
return tv;
}
_PUBLIC_ int timeval_compare(const struct timeval *tv1, const struct timeval *tv2)
{
if (tv1->tv_sec > tv2->tv_sec) return 1;
if (tv1->tv_sec < tv2->tv_sec) return -1;
if (tv1->tv_usec > tv2->tv_usec) return 1;
if (tv1->tv_usec < tv2->tv_usec) return -1;
return 0;
}
_PUBLIC_ struct timeval timeval_until(const struct timeval *tv1,
const struct timeval *tv2)
{
struct timeval t;
if (timeval_compare(tv1, tv2) >= 0) {
return timeval_zero();
}
t.tv_sec = tv2->tv_sec - tv1->tv_sec;
if (tv1->tv_usec > tv2->tv_usec) {
t.tv_sec--;
t.tv_usec = 1000000 - (tv1->tv_usec - tv2->tv_usec);
} else {
t.tv_usec = tv2->tv_usec - tv1->tv_usec;
}
return t;
}
static struct timeval timeval_add(const struct timeval *tv,
uint32_t secs, uint32_t usecs)
{
struct timeval tv2 = *tv;
const unsigned int million = 1000000;
tv2.tv_sec += secs;
tv2.tv_usec += usecs;
tv2.tv_sec += tv2.tv_usec / million;
tv2.tv_usec = tv2.tv_usec % million;
return tv2;
}
_PUBLIC_ struct timeval timeval_current_ofs(uint32_t secs, uint32_t usecs)
{
struct timeval tv = timeval_current();
return timeval_add(&tv, secs, usecs);
}
static char *fd_load(int fd, size_t *size, TALLOC_CTX *mem_ctx)
{
struct stat sbuf;
char *p;
if (fstat(fd, &sbuf) != 0) return NULL;
p = (char *)talloc_size(mem_ctx, sbuf.st_size+1);
if (!p) return NULL;
if (read(fd, p, sbuf.st_size) != sbuf.st_size) {
talloc_free(p);
return NULL;
}
p[sbuf.st_size] = 0;
if (size) *size = sbuf.st_size;
return p;
}
static char *file_load(const char *fname, size_t *size, TALLOC_CTX *mem_ctx)
{
int fd;
char *p;
if (!fname || !*fname) return NULL;
fd = open(fname,O_RDONLY);
if (fd == -1) return NULL;
p = fd_load(fd, size, mem_ctx);
close(fd);
return p;
}
/**
parse a buffer into lines
'p' will be freed on error, and otherwise will be made a child of the returned array
**/
static char **file_lines_parse(char *p, size_t size, int *numlines, TALLOC_CTX *mem_ctx)
{
int i;
char *s, **ret;
if (!p) return NULL;
for (s = p, i=0; s < p+size; s++) {
if (s[0] == '\n') i++;
}
ret = talloc_array(mem_ctx, char *, i+2);
if (!ret) {
talloc_free(p);
return NULL;
}
talloc_steal(ret, p);
memset(ret, 0, sizeof(ret[0])*(i+2));
if (numlines) *numlines = i;
ret[0] = p;
for (s = p, i=0; s < p+size; s++) {
if (s[0] == '\n') {
s[0] = 0;
i++;
ret[i] = s+1;
}
if (s[0] == '\r') s[0] = 0;
}
return ret;
}
/**
load a file into memory and return an array of pointers to lines in the file
must be freed with talloc_free().
**/
_PUBLIC_ char **file_lines_load(const char *fname, int *numlines, TALLOC_CTX *mem_ctx)
{
char *p;
size_t size;
p = file_load(fname, &size, mem_ctx);
if (!p) return NULL;
return file_lines_parse(p, size, numlines, mem_ctx);
}
char *hex_encode(TALLOC_CTX *mem_ctx, const unsigned char *buff_in, size_t len)
{
int i;
char *hex_buffer;
hex_buffer = talloc_array(mem_ctx, char, (len*2)+1);
for (i = 0; i < len; i++)
slprintf(&hex_buffer[i*2], 3, "%02X", buff_in[i]);
return hex_buffer;
}
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