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Sun Jul 14 01:51:39 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>

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* sysdeps/generic/dl-sysdep.c (_dl_sysdep_read_whole_file): New fn.
This commit is contained in:
Roland McGrath 1996-07-15 00:05:56 +00:00
parent 939d5646d1
commit 2d3bbb8c67
1 changed files with 37 additions and 1 deletions
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38
sysdeps/generic/dl-sysdep.c
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@ -19,6 +19,7 @@ Cambridge, MA 02139, USA. */
#include <elf.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <link.h>
#include <unistd.h>
@ -108,7 +109,7 @@ void
_dl_sysdep_start_cleanup (void)
{
}
#ifndef MAP_ANON
/* This is only needed if the system doesn't support MAP_ANON. */
@ -119,6 +120,41 @@ _dl_sysdep_open_zero_fill (void)
}
#endif
/* Read the whole contents of FILE into new mmap'd space with given
protections. *SIZEP gets the size of the file. */
void *
_dl_sysdep_read_whole_file (const char *file, size_t *sizep, int prot)
{
void *contents;
struct stat st;
int fd = __open (file, O_RDONLY);
if (fd < 0)
return NULL;
if (__fstat (fd, &st) < 0)
result = NULL;
else
{
/* Map a copy of the file contents. */
result = __mmap (0, st.st_size, prot,
#ifdef MAP_COPY
MAP_COPY
#else
MAP_PRIVATE
#endif
#ifdef MAP_FILE
| MAP_FILE
#endif
, fd, 0);
if (result == (void *) -1)
result = NULL;
else
*sizep = st.st_size;
}
__close (fd);
return result;
}
void
_dl_sysdep_fatal (const char *msg, ...)
{