43 lines
908 B
Diff
43 lines
908 B
Diff
--- a/backport-include/linux/string.h
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+++ b/backport-include/linux/string.h
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@@ -25,4 +25,8 @@ extern void *memdup_user_nul(const void
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void memzero_explicit(void *s, size_t count);
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#endif
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+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4,3,0))
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+ssize_t strscpy(char *dest, const char *src, size_t count);
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+#endif
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+
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#endif /* __BACKPORT_LINUX_STRING_H */
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--- a/compat/backport-4.3.c
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+++ b/compat/backport-4.3.c
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@@ -57,3 +57,29 @@ void seq_hex_dump(struct seq_file *m, co
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}
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}
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EXPORT_SYMBOL_GPL(seq_hex_dump);
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+
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+ssize_t strscpy(char *dest, const char *src, size_t count)
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+{
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+ long res = 0;
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+
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+ if (count == 0)
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+ return -E2BIG;
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+
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+ while (count) {
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+ char c;
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+
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+ c = src[res];
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+ dest[res] = c;
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+ if (!c)
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+ return res;
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+ res++;
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+ count--;
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+ }
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+
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+ /* Hit buffer length without finding a NUL; force NUL-termination. */
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+ if (res)
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+ dest[res-1] = '\0';
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+
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+ return -E2BIG;
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+}
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+EXPORT_SYMBOL_GPL(strscpy);
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