DeforaOS/Loader
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ldd: fail when no dynamic section is found

Browse Source
This commit is contained in:
Pierre Pronchery 2021-10-08 21:25:01 +02:00
parent 0120299822
commit 7742236366
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
tools/elf.c
View File

@ -85,6 +85,7 @@ static int ELFFUNC(phdr)(char const * filename, FILE * fp, ELFTYPE(Ehdr) * ehdr,
{ {
int ret = 0; int ret = 0;
size_t i; size_t i;
size_t cnt;
ELFTYPE(Dyn) * dyn; ELFTYPE(Dyn) * dyn;
if(fread(phdr, sizeof(*phdr), ehdr->e_phnum, fp) != ehdr->e_phnum) if(fread(phdr, sizeof(*phdr), ehdr->e_phnum, fp) != ehdr->e_phnum)
@ -95,11 +96,12 @@ static int ELFFUNC(phdr)(char const * filename, FILE * fp, ELFTYPE(Ehdr) * ehdr,
ret = -_error(filename, "Corrupted ELF file", 1); ret = -_error(filename, "Corrupted ELF file", 1);
return ret; return ret;
} }
printf("%s:\n", filename); for(i = 0, cnt = 0; i < ehdr->e_phnum; i++)
for(i = 0; i < ehdr->e_phnum; i++)
{ {
if(phdr[i].p_type != PT_DYNAMIC) if(phdr[i].p_type != PT_DYNAMIC)
continue; continue;
if(cnt++ == 0)
printf("%s:\n", filename);
if(fseek(fp, phdr[i].p_offset, SEEK_SET) != 0) if(fseek(fp, phdr[i].p_offset, SEEK_SET) != 0)
{ {
ret |= -_error(filename, strerror(errno), 1); ret |= -_error(filename, strerror(errno), 1);
@ -123,6 +125,8 @@ static int ELFFUNC(phdr)(char const * filename, FILE * fp, ELFTYPE(Ehdr) * ehdr,
} }
free(dyn); free(dyn);
} }
if(cnt == 0)
ret |= -_error(filename, "Not a dynamic ELF object", 1);
return ret; return ret;
} }