From ccb423ed6f317da5a02f4feeda082d791215a4ba Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Wed, 14 Feb 2018 17:16:53 +0000 Subject: Add execvep_loose, prepare for 2.6.4.0 --- src/libposixplz/execvep_internal.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 src/libposixplz/execvep_internal.c (limited to 'src/libposixplz/execvep_internal.c') diff --git a/src/libposixplz/execvep_internal.c b/src/libposixplz/execvep_internal.c new file mode 100644 index 0000000..17858f0 --- /dev/null +++ b/src/libposixplz/execvep_internal.c @@ -0,0 +1,37 @@ +/* ISC license. */ + +#include +#include +#include +#include +#include + +void execvep_internal (char const *file, char const *const *argv, char const *const *envp, char const *path) +{ + if (!path) errno = EINVAL ; + else + { + size_t pathlen = strlen(path) + 1 ; + size_t filelen = strlen(file) ; + int savederrno = 0 ; + while (pathlen) + { + size_t split = byte_chr(path, pathlen - 1, ':') ; + if (split) + { + char tmp[split + 2 + filelen] ; + memcpy(tmp, path, split) ; + tmp[split] = '/' ; + memcpy(tmp + split + 1, file, filelen + 1) ; + execve(tmp, (char *const *)argv, (char *const *)envp) ; + if (errno != ENOENT) + { + savederrno = errno ; + if ((errno != EACCES) && (errno != EPERM) && (errno != EISDIR)) break ; + } + } + path += split+1 ; pathlen -= split+1 ; + } + if (savederrno) errno = savederrno ; + } +} -- cgit v1.3.1