diff options
author | Nicholas Noll <nbnoll@eml.cc> | 2020-06-18 19:49:01 -0700 |
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committer | Nicholas Noll <nbnoll@eml.cc> | 2020-06-18 19:49:01 -0700 |
commit | 81fed70379578f4fe6255fdf33699675179ffe91 (patch) | |
tree | 5518ee17eb5781ee7e50454f5805599fd8388fce /sys/cmd/ic/strlcpy.c | |
parent | d62e5c1df92ee159d0203b75adebb50faf45badb (diff) |
feat: small coreutils added
Diffstat (limited to 'sys/cmd/ic/strlcpy.c')
-rw-r--r-- | sys/cmd/ic/strlcpy.c | 32 |
1 files changed, 32 insertions, 0 deletions
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 <sys/types.h> +#include <string.h> + +/* + * 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 */ +} |