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--- Begin Message ---
From: Yuteng Zhong <zonyi...@qq.com>

github issue: https://github.com/openwrt/openwrt/issues/10933

A static-linked binary doesn't have a .dynamic section, but when
starting ujail with -r or -w will automatically search for PT_DYNAMIC in
ELF and exit with failure if it is not found.

Signed-off-by: Yuteng Zhong <zonyi...@qq.com>
---
 jail/elf.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/jail/elf.c b/jail/elf.c
index 176d046..978fc6e 100644
--- a/jail/elf.c
+++ b/jail/elf.c
@@ -236,18 +236,18 @@ int elf_load_deps(const char *path, const char *map)
        unsigned long load_offset, load_vaddr;
        unsigned long interp_offset;
 
-       if (elf_find_section(map, PT_LOAD, &load_offset, NULL, &load_vaddr)) {
-               ERROR("failed to load the .load section from %s\n", path);
-               return -1;
+       if (elf_find_section(map, PT_INTERP, &interp_offset, NULL, NULL) == 0) {
+               add_path_and_deps(map+interp_offset, 1, -1, 0);
        }
 
-       if (elf_find_section(map, PT_DYNAMIC, &dyn_offset, &dyn_size, NULL)) {
-               ERROR("failed to load the .dynamic section from %s\n", path);
-               return -1;
+       if (elf_find_section(map, PT_LOAD, &load_offset, NULL, &load_vaddr)) {
+               DEBUG("failed to load the .load section from %s\n", path);
+               return 0;
        }
 
-       if (elf_find_section(map, PT_INTERP, &interp_offset, NULL, NULL) == 0) {
-               add_path_and_deps(map+interp_offset, 1, -1, 0);
+       if (elf_find_section(map, PT_DYNAMIC, &dyn_offset, &dyn_size, NULL)) {
+               DEBUG("failed to load the .dynamic section from %s\n", path);
+               return 0;
        }
 
        int clazz = map[EI_CLASS];
-- 
2.38.0



--- End Message ---
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