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* trad-core.c (trad_unix_core_file_p): Check the file size.

This commit is contained in:
Jim Kingdon 1993-04-26 21:03:35 +00:00
parent 7508b715df
commit 31568a6f41
2 changed files with 77 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
bfd/ChangeLog
View File

@ -1,3 +1,11 @@
Mon Apr 26 13:55:42 1993 Jim Kingdon (kingdon@cygnus.com)
* trad-core.c (trad_unix_core_file_p): Check the file size.
Mon Apr 26 13:24:43 1993 Steve Chamberlain (sac@thepub.cygnus.com)
* coff-alpha.c: Remove duplicate function and add warnings.
Mon Apr 26 11:25:58 1993 Ian Lance Taylor (ian@cygnus.com)
* sco-core.c (sco_core_vec): Add initializers for new target

83
bfd/trad-core.c
View File

@ -76,14 +76,48 @@ trad_unix_core_file_p (abfd)
val = bfd_read ((void *)&u, 1, sizeof u, abfd);
if (val != sizeof u)
return 0; /* Too small to be a core file */
{
/* Too small to be a core file */
bfd_error = wrong_format;
return 0;
}
/* Sanity check perhaps??? */
if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */
return 0;
{
bfd_error = wrong_format;
return 0;
}
if (u.u_ssize > 0x1000000)
return 0;
/* Check that the size claimed is no greater than the file size. FIXME. */
{
bfd_error = wrong_format;
return 0;
}
/* Check that the size claimed is no greater than the file size. */
{
FILE *stream = bfd_cache_lookup (abfd);
struct stat statbuf;
if (stream == NULL)
return 0;
if (fstat (fileno (stream), &statbuf) < 0)
{
bfd_error = system_call_error;
return 0;
}
if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) > statbuf.st_size)
{
bfd_error = file_truncated;
return 0;
}
if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) < statbuf.st_size)
{
/* The file is too big. Maybe it's not a core file
or we otherwise have bad values for u_dsize and u_ssize). */
bfd_error = wrong_format;
return 0;
}
}
/* OK, we believe you. You're a core file (sure, sure). */
@ -193,7 +227,11 @@ int
trad_unix_core_file_failing_signal (ignore_abfd)
bfd *ignore_abfd;
{
#ifdef TRAD_UNIX_CORE_FILE_FAILING_SIGNAL
return TRAD_UNIX_CORE_FILE_FAILING_SIGNAL(ignore_abfd);
#else
return -1; /* FIXME, where is it? */
#endif
}
/* ARGSUSED */
@ -230,7 +268,7 @@ trad_unix_core_file_matches_executable_p (core_bfd, exec_bfd)
#define trad_unix_canonicalize_reloc (unsigned int (*) PARAMS \
((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u
#define trad_unix_make_empty_symbol (struct symbol_cache_entry * \
(*) (bfd *)) bfd_false
(*) PARAMS ((bfd *))) bfd_false
#define trad_unix_print_symbol (void (*) PARAMS \
((bfd *, PTR, struct symbol_cache_entry *, \
bfd_print_symbol_type))) bfd_false
@ -253,6 +291,10 @@ trad_unix_core_file_matches_executable_p (core_bfd, exec_bfd)
#define trad_unix_bfd_relax_section bfd_generic_relax_section
#define trad_unix_bfd_seclet_link \
((boolean (*) PARAMS ((bfd *, PTR, boolean))) bfd_false)
#define trad_unix_bfd_reloc_type_lookup \
((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
#define trad_unix_bfd_make_debug_symbol \
((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
/* If somebody calls any byte-swapping routines, shoot them. */
void
@ -277,15 +319,28 @@ bfd_target trad_core_vec =
' ', /* ar_pad_char */
16, /* ar_max_namelen */
3, /* minimum alignment power */
NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* data */
NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* hdrs */
NO_GET, NO_GET, NO_PUT, /* 64 bit data */
NO_GET, NO_GET, NO_PUT, /* 32 bit data */
NO_GET, NO_GET, NO_PUT, /* 16 bit data */
NO_GET, NO_GET, NO_PUT, /* 64 bit hdrs */
NO_GET, NO_GET, NO_PUT, /* 32 bit hdrs */
NO_GET, NO_GET, NO_PUT, /* 16 bit hdrs */
{_bfd_dummy_target, _bfd_dummy_target,
_bfd_dummy_target, trad_unix_core_file_p},
{bfd_false, bfd_false, /* bfd_create_object */
bfd_false, bfd_false},
{bfd_false, bfd_false, /* bfd_write_contents */
bfd_false, bfd_false},
{ /* bfd_check_format */
_bfd_dummy_target, /* unknown format */
_bfd_dummy_target, /* object file */
_bfd_dummy_target, /* archive */
trad_unix_core_file_p /* a core file */
},
{ /* bfd_set_format */
bfd_false, bfd_false,
bfd_false, bfd_false
},
{ /* bfd_write_contents */
bfd_false, bfd_false,
bfd_false, bfd_false
},
JUMP_TABLE(trad_unix)
JUMP_TABLE(trad_unix),
(PTR) 0 /* backend_data */
};