diff options
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/exec.c b/fs/exec.c index 0e1c95074d42..995cba3c62b8 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -127,7 +127,7 @@ asmlinkage long sys_uselib(const char __user * library) struct nameidata nd; int error; - error = __user_path_lookup_open(library, LOOKUP_FOLLOW, &nd, FMODE_READ); + error = __user_path_lookup_open(library, LOOKUP_FOLLOW, &nd, FMODE_READ|FMODE_EXEC); if (error) goto out; @@ -477,7 +477,7 @@ struct file *open_exec(const char *name) int err; struct file *file; - err = path_lookup_open(AT_FDCWD, name, LOOKUP_FOLLOW, &nd, FMODE_READ); + err = path_lookup_open(AT_FDCWD, name, LOOKUP_FOLLOW, &nd, FMODE_READ|FMODE_EXEC); file = ERR_PTR(err); if (!err) { @@ -885,6 +885,12 @@ int flush_old_exec(struct linux_binprm * bprm) current->flags &= ~PF_RANDOMIZE; flush_thread(); + /* Set the new mm task size. We have to do that late because it may + * depend on TIF_32BIT which is only updated in flush_thread() on + * some architectures like powerpc + */ + current->mm->task_size = TASK_SIZE; + if (bprm->e_uid != current->euid || bprm->e_gid != current->egid || file_permission(bprm->file, MAY_READ) || (bprm->interp_flags & BINPRM_FLAGS_ENFORCE_NONDUMP)) { @@ -1137,10 +1143,9 @@ int do_execve(char * filename, int i; retval = -ENOMEM; - bprm = kmalloc(sizeof(*bprm), GFP_KERNEL); + bprm = kzalloc(sizeof(*bprm), GFP_KERNEL); if (!bprm) goto out_ret; - memset(bprm, 0, sizeof(*bprm)); file = open_exec(filename); retval = PTR_ERR(file); |