6959332804
The check for dladdr1 for shared libc is too strict. Depending on how the system is setup we sometimes pick up the none generic lib name with the version string in it. Update check to for libc to account for version string.
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/* RUN: %clang_msan -g %s -o %t
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RUN: %clang_msan -g %s -DBUILD_SO -fPIC -o %t-so.so -shared
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RUN: %run %t 2>&1 | FileCheck %s
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REQUIRES: glibc{{.*}}
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*/
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#define _GNU_SOURCE
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#ifndef BUILD_SO
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#include <assert.h>
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#include <dlfcn.h>
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#include <elf.h>
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#include <link.h>
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#include <stdio.h>
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#include <stdlib.h>
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typedef volatile long *(* get_t)();
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get_t GetTls;
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int main(int argc, char *argv[]) {
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char path[4096];
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snprintf(path, sizeof(path), "%s-so.so", argv[0]);
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int i;
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void *handle = dlopen(path, RTLD_LAZY);
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if (!handle) fprintf(stderr, "%s\n", dlerror());
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assert(handle != 0);
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GetTls = (get_t)dlsym(handle, "GetTls");
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assert(dlerror() == 0);
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{
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printf("Testing RTLD_DL_LINKMAP\n");
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fflush(stdout);
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Dl_info info;
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struct link_map *map_ptr;
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int ret = dladdr1(GetTls, &info, (void**)(&map_ptr), RTLD_DL_LINKMAP);
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assert(ret != 0);
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printf("fname: %s\n", info.dli_fname);
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printf("fbase: %p\n", info.dli_fbase);
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printf("sname: %s\n", info.dli_sname);
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// CHECK: sname: GetTls
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printf("saddr: %p\n", info.dli_saddr);
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assert(map_ptr != NULL);
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printf("map_ptr: %p\n", map_ptr);
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fflush(stdout);
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// Find the start of the link map
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while(map_ptr->l_prev != NULL) {
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fflush(stdout);
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map_ptr = map_ptr->l_prev;
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}
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fflush(stdout);
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while(map_ptr != NULL) {
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assert(map_ptr->l_name != NULL);
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printf("0x%lx: '%s', %p\n", map_ptr->l_addr, map_ptr->l_name, map_ptr->l_ld);
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fflush(stdout);
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map_ptr = map_ptr->l_next;
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}
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// CHECK: libc{{[\-]*.*}}.so
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// CHECK: dladdr1_test
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}
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// Test RTLD_DL_SYMENT
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{
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printf("Testing RTLD_DL_SYMENT\n");
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fflush(stdout);
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Dl_info info;
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ElfW(Sym) *sym;
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int ret = dladdr1(GetTls, &info, (void**)(&sym), RTLD_DL_SYMENT);
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assert(ret != 0);
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printf("fname: %s\n", info.dli_fname);
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printf("fbase: %p\n", info.dli_fbase);
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printf("sname: %s\n", info.dli_sname);
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// CHECK: sname: GetTls
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printf("saddr: %p\n", info.dli_saddr);
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printf("sym: %d %d %d %d %lu %lu\n",
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sym->st_name, sym->st_info, sym->st_other,
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sym->st_shndx, sym->st_value, sym->st_size);
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// CHECK: sym:
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}
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return 0;
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}
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#else // BUILD_SO
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long var;
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long *GetTls() {
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return &var;
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}
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#endif
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