[PATCH 1/3] remove non-portable usage of strndupa

[John Spencer]

usage of strndupa is neither C99 nor POSIX,
so musl libc does not implement it.
it's a glibc invention, and a dangerous one since
usage of alloca() is considered bad practice.

fixes build with musl libc.

Signed-off-by: John Spencer <maillist-kmod-***@public.gmane.org>

---
libkmod/libkmod-util.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/libkmod/libkmod-util.c b/libkmod/libkmod-util.c
index d686250..9615d0f 100644
--- a/libkmod/libkmod-util.c
+++ b/libkmod/libkmod-util.c
@@ -28,6 +28,7 @@
#include <unistd.h>
#include <errno.h>
#include <string.h>
+#include <limits.h>
#include <ctype.h>

#include "libkmod.h"
@@ -323,8 +324,11 @@ static inline int is_dir(const char *path)
int mkdir_p(const char *path, int len, mode_t mode)
{
char *start, *end;
-
- start = strndupa(path, len);
+ char buf[PATH_MAX+1];
+ snprintf(buf, sizeof buf, "%s", path);
+ assert(len < sizeof(buf));
+ buf[len] = 0;
+ start = buf;
end = start + len;

/*