#include <stdlib.h>
#include <unistd.h>
-#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <libgen.h>
#include <glob.h>
#include <elf.h>
+#include <linux/limits.h>
#include <libubox/utils.h>
#include "elf.h"
+#include "log.h"
struct avl_tree libraries;
static LIST_HEAD(library_paths);
-void alloc_library_path(const char *path)
+static void alloc_library_path(const char *path)
{
+ struct stat s;
+ if (stat(path, &s))
+ return;
+
struct library_path *p;
char *_path;
DEBUG("adding library %s/%s\n", path, name);
}
-static int elf_open(char **dir, char *file)
+static int elf_open(char **dir, const char *file)
{
struct library_path *p;
- char path[256];
+ char path[PATH_MAX];
int fd = -1;
*dir = NULL;
return fd;
}
-char* find_lib(char *file)
+const char* find_lib(const char *file)
{
struct library *l;
- static char path[256];
+ static char path[PATH_MAX];
const char *p;
l = avl_find_element(&libraries, file, l, avl);
return path;
}
-static int elf64_find_section(char *map, unsigned int type, unsigned int *offset, unsigned int *size, unsigned int *vaddr)
+static int elf64_find_section(const char *map, unsigned int type, unsigned int *offset, unsigned int *size, unsigned int *vaddr)
{
Elf64_Ehdr *e;
Elf64_Phdr *ph;
return -1;
}
-static int elf32_find_section(char *map, unsigned int type, unsigned int *offset, unsigned int *size, unsigned int *vaddr)
+static int elf32_find_section(const char *map, unsigned int type, unsigned int *offset, unsigned int *size, unsigned int *vaddr)
{
Elf32_Ehdr *e;
Elf32_Phdr *ph;
return -1;
}
-static int elf_find_section(char *map, unsigned int type, unsigned int *offset, unsigned int *size, unsigned int *vaddr)
+static int elf_find_section(const char *map, unsigned int type, unsigned int *offset, unsigned int *size, unsigned int *vaddr)
{
int clazz = map[EI_CLASS];
return -1;
}
-static int elf32_scan_dynamic(char *map, int dyn_offset, int dyn_size, int load_offset)
+static int elf32_scan_dynamic(const char *map, int dyn_offset, int dyn_size, int load_offset)
{
Elf32_Dyn *dynamic = (Elf32_Dyn *) (map + dyn_offset);
- char *strtab = NULL;
+ const char *strtab = NULL;
while ((void *) dynamic < (void *) (map + dyn_offset + dyn_size)) {
Elf32_Dyn *curr = dynamic;
return 0;
}
-static int elf64_scan_dynamic(char *map, int dyn_offset, int dyn_size, int load_offset)
+static int elf64_scan_dynamic(const char *map, int dyn_offset, int dyn_size, int load_offset)
{
Elf64_Dyn *dynamic = (Elf64_Dyn *) (map + dyn_offset);
- char *strtab = NULL;
+ const char *strtab = NULL;
while ((void *) dynamic < (void *) (map + dyn_offset + dyn_size)) {
Elf64_Dyn *curr = dynamic;
return 0;
}
-int elf_load_deps(char *library)
+int elf_load_deps(const char *library)
{
unsigned int dyn_offset, dyn_size;
unsigned int load_offset, load_vaddr;
if (dir) {
alloc_library(dir, library);
} else {
- char *elf = strdup(library);
+ char *elf1 = strdup(library);
+ char *elf2 = strdup(library);
- alloc_library(dirname(elf), basename(library));
- free(elf);
+ alloc_library(dirname(elf1), basename(elf2));
+ free(elf1);
+ free(elf2);
}
clazz = map[EI_CLASS];
return ret;
}
-void load_ldso_conf(const char *conf)
+static void load_ldso_conf(const char *conf)
{
FILE* fp = fopen(conf, "r");
- char line[256];
+ char line[PATH_MAX];
if (!fp) {
DEBUG("failed to open %s\n", conf);
while (!feof(fp)) {
int len;
- if (!fgets(line, 256, fp))
+ if (!fgets(line, sizeof(line), fp))
break;
len = strlen(line);
if (len < 2)
load_ldso_conf(gl.gl_pathv[i]);
globfree(&gl);
} else {
- struct stat s;
-
- if (stat(line, &s))
- continue;
alloc_library_path(line);
}
}
fclose(fp);
}
+
+void init_library_search(void)
+{
+ avl_init(&libraries, avl_strcmp, false, NULL);
+ alloc_library_path("/lib");
+ alloc_library_path("/lib64");
+ alloc_library_path("/usr/lib");
+ load_ldso_conf("/etc/ld.so.conf");
+}