RepoMirrors/kpatch
1
0
Fork 0
mirror of https://github.com/dynup/kpatch synced 2025-01-03 03:02:01 +00:00
Code Issues Packages Projects Releases Wiki Activity

lookup: Skip .dynsym table in symtab_read()

Browse Source 
On powerpc, "readelf -s" of vmlinux shows both .dynsym and .symtab.
.dynsym is just a subset of .symtab, so skip it to avoid duplicates.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
This commit is contained in:
Josh Poimboeuf 2020-04-06 15:05:06 -05:00
parent 7e48138185
commit e4d37dad5d
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
kpatch-build/lookup.c
View File

@ -35,6 +35,7 @@
#include <gelf.h>
#include <unistd.h>
#include <libgen.h>
#include <stdbool.h>
#include "lookup.h"
#include "log.h"
@ -203,6 +204,7 @@ static void symtab_read(struct lookup_table *table, char *path)
long unsigned int value;
int alloc_nr = 0, i = 0;
int matched;
bool skip = false;
char line[256], name[256], size[16], type[16], bind[16], ndx[16];
if ((file = fopen(path, "r")) == NULL)
@ -224,6 +226,22 @@ static void symtab_read(struct lookup_table *table, char *path)
/* Now read the actual entries: */
while (fgets(line, 256, file)) {
/*
* On powerpc, "readelf -s" shows both .dynsym and .symtab
* tables. .dynsym is just a subset of .symtab, so skip it to
* avoid duplicates.
*/
if (strstr(line, ".dynsym")) {
skip = true;
continue;
} else if (strstr(line, ".symtab")) {
skip = false;
continue;
}
if (skip)
continue;
matched = sscanf(line, "%*s %lx %s %s %s %*s %s %s\n",
&value, size, type, bind, ndx, name);