32 lines
795 B
Diff
32 lines
795 B
Diff
remove non-portable usage of strndupa
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usage of strndupa is neither C99 nor POSIX,
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it's a glibc invention, and a dangerous one since
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alloca() is used behind the scenes which does not
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give any guarantuees that it won't overflow the
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stack.
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--- libkmod/libkmod-util.c 2013-08-26 16:03:22.239000003 +0000
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+++ libkmod/libkmod-util.c 2013-08-26 16:07:26.684000003 +0000
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@@ -28,6 +28,7 @@
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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+#include <limits.h>
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#include <ctype.h>
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#include "libkmod.h"
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@@ -323,8 +324,11 @@
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int mkdir_p(const char *path, int len, mode_t mode)
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{
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char *start, *end;
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-
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- start = strndupa(path, len);
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+ char buf[PATH_MAX+1];
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+ snprintf(buf, sizeof buf, "%s", path);
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+ assert(len < sizeof(buf));
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+ buf[len] = 0;
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+ start = buf;
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end = start + len;
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/*
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