From 18e43565574b700befc832ed4d25d25e40951f68 Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Tue, 24 Nov 2020 21:45:56 +0000 Subject: Complete revamp of the pathexec functions - pathexec_run is now called exec_ae a for provided file name (default: argv[0]) e for provided envp (default: environ) - pathexec is now called mexec. m for merge environment. Option letters are: a for provided file name (default: argv[0]) e for provided envp (default: environ) f for provided envp *and* length of the envp m for provided modif string plus its length (the length is always needed because the modifs are null-terminated) n for provided modif string, length *and* number of modifs - functions have a foo0 version for _exit(0) when argv[0] is null - functions have a xfoo version to die if the exec fails - and a xfoo0 - Compatibility #defines and #includes are there until the next major bump --- src/libenvexec/env_addmodif.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 src/libenvexec/env_addmodif.c (limited to 'src/libenvexec/env_addmodif.c') diff --git a/src/libenvexec/env_addmodif.c b/src/libenvexec/env_addmodif.c new file mode 100644 index 0000000..ddd1be3 --- /dev/null +++ b/src/libenvexec/env_addmodif.c @@ -0,0 +1,19 @@ +/* ISC license. */ + +#include +#include +#include + +int env_addmodif (stralloc *sa, char const *s, char const *t) +{ + size_t oldlen = sa->len ; + if (!s) return 1 ; + if (!stralloc_cats(sa, s)) return 0 ; + if ((t && (!stralloc_catb(sa, "=", 1) || !stralloc_cats(sa, t))) + || !stralloc_0(sa)) + { + sa->len = oldlen ; + return 0 ; + } + return 1 ; +} -- cgit v1.2.3