591b9ae Try and determine OS/ABI from Elf Notes section. — HardenedBSD-pkg

HardenedBSD Package Manager

Try and determine OS/ABI from Elf Notes section.

Matthew Seaman committed 14 years ago

commit 591b9ae4ab0e861cfe495929b7d33d552f6a2aab
parent ce0c85cfe98539307834b456e38f27d0a2e5e019

1 file changed +27 -0

modified libpkg/pkg_elf.c

@@ -133,6 +133,7 @@ analyse_elf(const char *fpath, const char ***namelist)

 	size_t numdyn;
 	size_t dynidx;
 	const char *osname;
 	const char **name;
 	int fd;

@@ -144,6 +145,7 @@ analyse_elf(const char *fpath, const char ***namelist)

 		close(fd);
 		return (EPKG_FATAL);
 	}
 	if (elf_kind(e) != ELF_K_ELF) {
 		close(fd);
 		return (EPKG_END); /* Not an elf file: no results */

@@ -154,6 +156,31 @@ analyse_elf(const char *fpath, const char ***namelist)

 			close(fd);
 			return (EPKG_FATAL);
 		}
 		if (shdr.sh_type == SHT_NOTE)
 			break;
 	}
 	if  (scn == NULL) {
 		ret = EPKG_FATAL;
 		pkg_emit_error("failed to get the note section for %s", fpath);
 		goto cleanup;
 	}
 	data = elf_getdata(scn, NULL);
         osname = (const char *) data->d_buf + sizeof(Elf_Note);
 	if (strncasecmp(osname, "freebsd", sizeof("freebsd")) != 0) {
 		ret = EPKG_END;	/* Foreign (probably linux) ELF object */
 		pkg_emit_error("ingnoring %s ELF object", osname);
 		goto cleanup;
 	}
 	scn = NULL;
 	while (( scn = elf_nextscn(e, scn)) != NULL) {
 		if (gelf_getshdr(scn, &shdr) != &shdr) {
 			ret = EPKG_FATAL;
 			pkg_emit_error("getshdr() failed: %s", elf_errmsg(-1));
 			goto cleanup;
 		}
 		if (shdr.sh_type == SHT_DYNAMIC)
 			break;
 	}