cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

util.c (2210B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
      4 * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
      5 */
      6
      7#include <stdarg.h>
      8#include <stdlib.h>
      9#include <string.h>
     10#include "lkc.h"
     11
     12/* file already present in list? If not add it */
     13struct file *file_lookup(const char *name)
     14{
     15	struct file *file;
     16
     17	for (file = file_list; file; file = file->next) {
     18		if (!strcmp(name, file->name)) {
     19			return file;
     20		}
     21	}
     22
     23	file = xmalloc(sizeof(*file));
     24	memset(file, 0, sizeof(*file));
     25	file->name = xstrdup(name);
     26	file->next = file_list;
     27	file_list = file;
     28	return file;
     29}
     30
     31/* Allocate initial growable string */
     32struct gstr str_new(void)
     33{
     34	struct gstr gs;
     35	gs.s = xmalloc(sizeof(char) * 64);
     36	gs.len = 64;
     37	gs.max_width = 0;
     38	strcpy(gs.s, "\0");
     39	return gs;
     40}
     41
     42/* Free storage for growable string */
     43void str_free(struct gstr *gs)
     44{
     45	if (gs->s)
     46		free(gs->s);
     47	gs->s = NULL;
     48	gs->len = 0;
     49}
     50
     51/* Append to growable string */
     52void str_append(struct gstr *gs, const char *s)
     53{
     54	size_t l;
     55	if (s) {
     56		l = strlen(gs->s) + strlen(s) + 1;
     57		if (l > gs->len) {
     58			gs->s = xrealloc(gs->s, l);
     59			gs->len = l;
     60		}
     61		strcat(gs->s, s);
     62	}
     63}
     64
     65/* Append printf formatted string to growable string */
     66void str_printf(struct gstr *gs, const char *fmt, ...)
     67{
     68	va_list ap;
     69	char s[10000]; /* big enough... */
     70	va_start(ap, fmt);
     71	vsnprintf(s, sizeof(s), fmt, ap);
     72	str_append(gs, s);
     73	va_end(ap);
     74}
     75
     76/* Retrieve value of growable string */
     77const char *str_get(struct gstr *gs)
     78{
     79	return gs->s;
     80}
     81
     82void *xmalloc(size_t size)
     83{
     84	void *p = malloc(size);
     85	if (p)
     86		return p;
     87	fprintf(stderr, "Out of memory.\n");
     88	exit(1);
     89}
     90
     91void *xcalloc(size_t nmemb, size_t size)
     92{
     93	void *p = calloc(nmemb, size);
     94	if (p)
     95		return p;
     96	fprintf(stderr, "Out of memory.\n");
     97	exit(1);
     98}
     99
    100void *xrealloc(void *p, size_t size)
    101{
    102	p = realloc(p, size);
    103	if (p)
    104		return p;
    105	fprintf(stderr, "Out of memory.\n");
    106	exit(1);
    107}
    108
    109char *xstrdup(const char *s)
    110{
    111	char *p;
    112
    113	p = strdup(s);
    114	if (p)
    115		return p;
    116	fprintf(stderr, "Out of memory.\n");
    117	exit(1);
    118}
    119
    120char *xstrndup(const char *s, size_t n)
    121{
    122	char *p;
    123
    124	p = strndup(s, n);
    125	if (p)
    126		return p;
    127	fprintf(stderr, "Out of memory.\n");
    128	exit(1);
    129}