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#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sofort/sofort.h>
#include "sofort_driver_impl.h"
#include "sofort_errinfo_impl.h"
int sfrt_map_input(
const struct sfrt_driver_ctx * dctx,
int fd,
const char * path,
int prot,
struct sfrt_input * map)
{
int ret;
struct stat st;
bool fnew;
int fdcwd;
fdcwd = sfrt_driver_fdcwd(dctx);
if ((fnew = (fd < 0)))
fd = openat(fdcwd,path,O_RDONLY|O_CLOEXEC);
if (fd < 0)
return SFRT_SYSTEM_ERROR(dctx);
if ((ret = fstat(fd,&st) < 0) && fnew)
close(fd);
else if ((st.st_size == 0) && fnew)
close(fd);
if (ret < 0)
return SFRT_SYSTEM_ERROR(dctx);
else if (st.st_size == 0)
return SFRT_CUSTOM_ERROR(
dctx,SFRT_ERR_SOURCE_SIZE_ZERO);
map->size = st.st_size;
map->addr = mmap(0,map->size,prot,MAP_PRIVATE,fd,0);
if (fnew)
close(fd);
return (map->addr == MAP_FAILED)
? SFRT_SYSTEM_ERROR(dctx)
: 0;
}
int sfrt_unmap_input(struct sfrt_input * map)
{
return munmap(map->addr,map->size);
}
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