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Prevent seg fault with corrupt section name indicies

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This commit is contained in:
Nick Clifton 2001-01-16 23:22:44 +00:00
parent 9c646a6e13
commit d40ac9bde2
1 changed files with 9 additions and 7 deletions
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16
binutils/readelf.c
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@ -1,5 +1,5 @@
/* readelf.c -- display contents of an ELF format file
Copyright (C) 1998, 99, 2000 Free Software Foundation, Inc.
Copyright (C) 1998, 99, 2000, 2001 Free Software Foundation, Inc.
Originally developed by Eric Youngdale <eric@andante.jic.com>
Modifications by Nick Clifton <nickc@cygnus.com>
@ -85,6 +85,7 @@ unsigned int rela_addr;
unsigned int rela_size;
char * dynamic_strings;
char * string_table;
unsigned long string_table_length;
unsigned long num_dynamic_syms;
Elf_Internal_Sym * dynamic_symbols;
Elf_Internal_Syminfo * dynamic_syminfo;
@ -232,7 +233,9 @@ typedef int Elf32_Word;
#endif
#define UNKNOWN -1
#define SECTION_NAME(X) (string_table + (X)->sh_name)
#define SECTION_NAME(X) ((X) == NULL ? "<none>" : \
((X)->sh_name >= string_table_length \
? "<corrupt>" : string_table + (X)->sh_name))
#define DT_VERSIONTAGIDX(tag) (DT_VERNEEDNUM - (tag)) /* Reverse order! */
@ -2712,12 +2715,10 @@ process_section_headers (file)
if (section->sh_size != 0)
{
unsigned long string_table_offset;
string_table_offset = section->sh_offset;
GET_DATA_ALLOC (section->sh_offset, section->sh_size,
string_table, char *, "string table");
string_table_length = section->sh_size;
}
/* Scan the sections for the dynamic symbol table
@ -7445,7 +7446,7 @@ process_mips_specific (file)
}
printf (_("\nSection '%s' contains %d entries:\n"),
string_table + sect->sh_name, cnt);
SECTION_NAME (sect), cnt);
option = iopt;
@ -8004,6 +8005,7 @@ process_file (file_name)
{
free (string_table);
string_table = NULL;
string_table_length = 0;
}
if (dynamic_strings)