From 81fed70379578f4fe6255fdf33699675179ffe91 Mon Sep 17 00:00:00 2001 From: Nicholas Noll Date: Thu, 18 Jun 2020 19:49:01 -0700 Subject: feat: small coreutils added --- sys/cmd/ic/strlcpy.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 sys/cmd/ic/strlcpy.c (limited to 'sys/cmd/ic/strlcpy.c') diff --git a/sys/cmd/ic/strlcpy.c b/sys/cmd/ic/strlcpy.c new file mode 100644 index 0000000..db0e6f0 --- /dev/null +++ b/sys/cmd/ic/strlcpy.c @@ -0,0 +1,32 @@ +/* Taken from OpenBSD */ +#include +#include + +/* + * Copy src to string dst of size siz. At most siz-1 characters + * will be copied. Always NUL terminates (unless siz == 0). + * Returns strlen(src); if retval >= siz, truncation occurred. + */ +size_t +strlcpy(char *dst, const char *src, size_t siz) +{ + char *d = dst; + const char *s = src; + size_t n = siz; + + /* Copy as many bytes as will fit */ + if (n != 0) { + while (--n != 0) { + if ((*d++ = *s++) == '\0') + break; + } + } + /* Not enough room in dst, add NUL and traverse rest of src */ + if (n == 0) { + if (siz != 0) + *d = '\0'; /* NUL-terminate dst */ + while (*s++) + ; + } + return(s - src - 1); /* count does not include NUL */ +} -- cgit v1.2.1