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authorKaz Kylheku <kaz@kylheku.com>2021-09-25 13:09:01 -0700
committerKaz Kylheku <kaz@kylheku.com>2021-09-25 13:09:01 -0700
commitba75167d1e7c609b829978b3f4a748ce3cf69ad9 (patch)
treed7f4342eec79bd472ac0b0409346c679946f0442 /sysif.h
parentd95be98dd8b2feaffc296a19f9a6e59f76133568 (diff)
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New function: replace-env.
Using this new function together with env, it's now possible to save the set of environment variables, clobber it to a specified set (possibly empty) and then restore it. Useful for improved security in running child processes. * lib.[ch] (chk_substrdup_utf8): New function. * sysif.c (replace_env): New function. (sysif_init): Register replace-env intrinsic. * sysif.h (replace_env): Declared. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
Diffstat (limited to 'sysif.h')
-rw-r--r--sysif.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysif.h b/sysif.h
index 1001368d..6dc150e2 100644
--- a/sysif.h
+++ b/sysif.h
@@ -38,6 +38,7 @@ extern val path_s;
val errno_to_file_error(int err);
val env(void);
+val replace_env(val env_list);
val getenv_wrap(val name);
val errno_to_str(int err);
val at_exit_call(val func);