diff options
Diffstat (limited to 'fs/binfmt_elf_fdpic.c')
| -rw-r--r-- | fs/binfmt_elf_fdpic.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c index ed9a61c6beb..a4d933a5120 100644 --- a/fs/binfmt_elf_fdpic.c +++ b/fs/binfmt_elf_fdpic.c @@ -234,6 +234,14 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm, goto error; } + /* + * If the binary is not readable then enforce + * mm->dumpable = 0 regardless of the interpreter's + * permissions. + */ + if (file_permission(interpreter, MAY_READ) < 0) + bprm->interp_flags |= BINPRM_FLAGS_ENFORCE_NONDUMP; + retval = kernel_read(interpreter, 0, bprm->buf, BINPRM_BUF_SIZE); if (retval < 0) @@ -706,12 +714,11 @@ static int elf_fdpic_map_file(struct elf_fdpic_params *params, return -ELIBBAD; size = sizeof(*loadmap) + nloads * sizeof(*seg); - loadmap = kmalloc(size, GFP_KERNEL); + loadmap = kzalloc(size, GFP_KERNEL); if (!loadmap) return -ENOMEM; params->loadmap = loadmap; - memset(loadmap, 0, size); loadmap->version = ELF32_FDPIC_LOADMAP_VERSION; loadmap->nsegs = nloads; @@ -855,7 +862,7 @@ static int elf_fdpic_map_file(struct elf_fdpic_params *params, dynamic_error: printk("ELF FDPIC %s with invalid DYNAMIC section (inode=%lu)\n", - what, file->f_dentry->d_inode->i_ino); + what, file->f_path.dentry->d_inode->i_ino); return -ELIBBAD; } @@ -1186,7 +1193,7 @@ static int maydump(struct vm_area_struct *vma) /* Dump shared memory only if mapped from an anonymous file. */ if (vma->vm_flags & VM_SHARED) { - if (vma->vm_file->f_dentry->d_inode->i_nlink == 0) { + if (vma->vm_file->f_path.dentry->d_inode->i_nlink == 0) { kdcore("%08lx: %08lx: no (share)", vma->vm_start, vma->vm_flags); return 1; } @@ -1322,7 +1329,7 @@ static void fill_prstatus(struct elf_prstatus *prstatus, prstatus->pr_pid = p->pid; prstatus->pr_ppid = p->parent->pid; prstatus->pr_pgrp = process_group(p); - prstatus->pr_sid = p->signal->session; + prstatus->pr_sid = process_session(p); if (thread_group_leader(p)) { /* * This is the record for the group leader. Add in the @@ -1371,7 +1378,7 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p, psinfo->pr_pid = p->pid; psinfo->pr_ppid = p->parent->pid; psinfo->pr_pgrp = process_group(p); - psinfo->pr_sid = p->signal->session; + psinfo->pr_sid = process_session(p); i = p->state ? ffz(~p->state) + 1 : 0; psinfo->pr_state = i; |