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Don't issue errors on GDB Python files

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Many packages, including GCC, install Python files for GDB in library
diretory. ldconfig reads them and issue errors since they aren't ELF
files:

ldconfig: /usr/gcc-5.1.1/lib/libstdc++.so.6.0.21-gdb.py is not an ELF file - it has the wrong magic bytes at the start.

ldconfig: /usr/gcc-5.1.1/libx32/libstdc++.so.6.0.21-gdb.py is not an ELF file - it has the wrong magic bytes at the start.

ldconfig: /usr/gcc-5.1.1/lib64/libstdc++.so.6.0.21-gdb.py is not an ELF file - it has the wrong magic bytes at the start.

This patch silences ldconfig on GDB Python files by checking filenames
with -gdb.py suffix.

	[BZ #18585]
	* elf/readlib.c (is_gdb_python_file): New.
	(process_file): Don't issue errors on filenames with -gdb.py
	suffix.
This commit is contained in:
H.J. Lu 2015-06-24 03:21:29 -07:00
parent 6f874bd4d4
commit eea3dc5bf2
3 changed files with 17 additions and 2 deletions
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7
ChangeLog
View File

@ -1,3 +1,10 @@
2015-06-24 H.J. Lu <hongjiu.lu@intel.com>
[BZ #18585]
* elf/readlib.c (is_gdb_python_file): New.
(process_file): Don't issue errors on filenames with -gdb.py
suffix.
2015-06-24 Joseph Myers <joseph@codesourcery.com>
* math/auto-libm-test-in: Add more tests of csin and csinh.

2
NEWS
View File

@ -24,7 +24,7 @@ Version 2.22
18444, 18468, 18469, 18470, 18479, 18483, 18495, 18496, 18497, 18498,
18507, 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530,
18532, 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546,
18547, 18553, 18558, 18569, 18583, 18586, 18593.
18547, 18553, 18558, 18569, 18583, 18585, 18586, 18593.
* Cache information can be queried via sysconf() function on s390 e.g. with
_SC_LEVEL1_ICACHE_SIZE as argument.

10
elf/readlib.c
View File

@ -63,6 +63,13 @@ static struct known_names known_libs[] =
};
/* Check if string corresponds to a GDB Python file. */
static bool
is_gdb_python_file (const char *name)
{
size_t len = strlen (name);
return len > 7 && strcmp (name + len - 7, "-gdb.py") == 0;
}
/* Returns 0 if everything is ok, != 0 in case of error. */
int
@ -157,7 +164,8 @@ process_file (const char *real_file_name, const char *file_name,
beginning of the file. */
size_t len = MIN (statbuf.st_size, 512);
if (memmem (file_contents, len, "GROUP", 5) == NULL
&& memmem (file_contents, len, "GNU ld script", 13) == NULL)
&& memmem (file_contents, len, "GNU ld script", 13) == NULL
&& !is_gdb_python_file (file_name))
error (0, 0, _("%s is not an ELF file - it has the wrong magic bytes at the start.\n"),
file_name);
ret = 1;