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authorLinus Torvalds <torvalds@linux-foundation.org>2020-06-05 00:07:08 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-05 00:07:08 +0300
commit15a2bc4dbb9cfed1c661a657fcb10798150b7598 (patch)
treef9ca834dbdd2e6cf1d5a2cef5008f82c72b00261 /fs/binfmt_elf_fdpic.c
parent9ff7258575d5fee011649d20cc56de720a395191 (diff)
parent3977e285ee89a94699255dbbf6eeea13889a1083 (diff)
downloadlinux-15a2bc4dbb9cfed1c661a657fcb10798150b7598.tar.xz
Merge branch 'exec-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull execve updates from Eric Biederman: "Last cycle for the Nth time I ran into bugs and quality of implementation issues related to exec that could not be easily be fixed because of the way exec is implemented. So I have been digging into exec and cleanup up what I can. I don't think I have exec sorted out enough to fix the issues I started with but I have made some headway this cycle with 4 sets of changes. - promised cleanups after introducing exec_update_mutex - trivial cleanups for exec - control flow simplifications - remove the recomputation of bprm->cred The net result is code that is a bit easier to understand and work with and a decrease in the number of lines of code (if you don't count the added tests)" * 'exec-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (24 commits) exec: Compute file based creds only once exec: Add a per bprm->file version of per_clear binfmt_elf_fdpic: fix execfd build regression selftests/exec: Add binfmt_script regression test exec: Remove recursion from search_binary_handler exec: Generic execfd support exec/binfmt_script: Don't modify bprm->buf and then return -ENOEXEC exec: Move the call of prepare_binprm into search_binary_handler exec: Allow load_misc_binary to call prepare_binprm unconditionally exec: Convert security_bprm_set_creds into security_bprm_repopulate_creds exec: Factor security_bprm_creds_for_exec out of security_bprm_set_creds exec: Teach prepare_exec_creds how exec treats uids & gids exec: Set the point of no return sooner exec: Move handling of the point of no return to the top level exec: Run sync_mm_rss before taking exec_update_mutex exec: Fix spelling of search_binary_handler in a comment exec: Move the comment from above de_thread to above unshare_sighand exec: Rename flush_old_exec begin_new_exec exec: Move most of setup_new_exec into flush_old_exec exec: In setup_new_exec cache current in the local variable me ...
Diffstat (limited to 'fs/binfmt_elf_fdpic.c')
-rw-r--r--fs/binfmt_elf_fdpic.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index d9501a86cec9..aaf332d32326 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -338,7 +338,7 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm)
interp_params.flags |= ELF_FDPIC_FLAG_CONSTDISP;
/* flush all traces of the currently running executable */
- retval = flush_old_exec(bprm);
+ retval = begin_new_exec(bprm);
if (retval)
goto error;
@@ -434,7 +434,6 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm)
current->mm->start_stack = current->mm->start_brk + stack_size;
#endif
- install_exec_creds(bprm);
if (create_elf_fdpic_tables(bprm, current->mm,
&exec_params, &interp_params) < 0)
goto error;
@@ -589,7 +588,7 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm,
nitems = 1 + DLINFO_ITEMS + (k_platform ? 1 : 0) +
(k_base_platform ? 1 : 0) + AT_VECTOR_SIZE_ARCH;
- if (bprm->interp_flags & BINPRM_FLAGS_EXECFD)
+ if (bprm->have_execfd)
nitems++;
csp = sp;
@@ -629,10 +628,10 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm,
(elf_addr_t) (unsigned long) u_base_platform);
}
- if (bprm->interp_flags & BINPRM_FLAGS_EXECFD) {
+ if (bprm->have_execfd) {
nr = 0;
csp -= 2 * sizeof(unsigned long);
- NEW_AUX_ENT(AT_EXECFD, bprm->interp_data);
+ NEW_AUX_ENT(AT_EXECFD, bprm->execfd);
}
nr = 0;