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/*
* Sane compat.c for Linux
*/
#define _GNU_SOURCE
#include <stdlib.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "lib.h"
#include "token.h"
/*
* Allow old BSD naming too, it would be a pity to have to make a
* separate file just for this.
*/
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
/*
* Our blob allocator enforces the strict CHUNK size
* requirement, as a portability check.
*/
void *blob_alloc(unsigned long size)
{
void *ptr;
if (size & ~CHUNK)
die("internal error: bad allocation size (%d bytes)", size);
ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (ptr == MAP_FAILED)
ptr = NULL;
return ptr;
}
void blob_free(void *addr, unsigned long size)
{
if (!size || (size & ~CHUNK) || ((unsigned long) addr & 512))
die("internal error: bad blob free (%d bytes at %p)", size, addr);
munmap(addr, size);
}
long double string_to_ld(const char *nptr, char **endptr)
{
return strtold(nptr, endptr);
}
int identical_files(struct stream* s, struct stat *st, const char * name)
{
return s->dev == st->st_dev && s->ino == st->st_ino;
}
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