ce99091730
strlcpy() will be needed by the subcmd library. Move it to the shared tools/lib/string.c file which can be used by other tools. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/71e2804b973bf39ad3d3b9be10f99f2ea630be46.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
/*
|
|
* linux/tools/lib/string.c
|
|
*
|
|
* Copied from linux/lib/string.c, where it is:
|
|
*
|
|
* Copyright (C) 1991, 1992 Linus Torvalds
|
|
*
|
|
* More specifically, the first copied function was strtobool, which
|
|
* was introduced by:
|
|
*
|
|
* d0f1fed29e6e ("Add a strtobool function matching semantics of existing in kernel equivalents")
|
|
* Author: Jonathan Cameron <jic23@cam.ac.uk>
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <linux/string.h>
|
|
#include <linux/compiler.h>
|
|
|
|
/**
|
|
* memdup - duplicate region of memory
|
|
*
|
|
* @src: memory region to duplicate
|
|
* @len: memory region length
|
|
*/
|
|
void *memdup(const void *src, size_t len)
|
|
{
|
|
void *p = malloc(len);
|
|
|
|
if (p)
|
|
memcpy(p, src, len);
|
|
|
|
return p;
|
|
}
|
|
|
|
/**
|
|
* strtobool - convert common user inputs into boolean values
|
|
* @s: input string
|
|
* @res: result
|
|
*
|
|
* This routine returns 0 iff the first character is one of 'Yy1Nn0'.
|
|
* Otherwise it will return -EINVAL. Value pointed to by res is
|
|
* updated upon finding a match.
|
|
*/
|
|
int strtobool(const char *s, bool *res)
|
|
{
|
|
switch (s[0]) {
|
|
case 'y':
|
|
case 'Y':
|
|
case '1':
|
|
*res = true;
|
|
break;
|
|
case 'n':
|
|
case 'N':
|
|
case '0':
|
|
*res = false;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* strlcpy - Copy a C-string into a sized buffer
|
|
* @dest: Where to copy the string to
|
|
* @src: Where to copy the string from
|
|
* @size: size of destination buffer
|
|
*
|
|
* Compatible with *BSD: the result is always a valid
|
|
* NUL-terminated string that fits in the buffer (unless,
|
|
* of course, the buffer size is zero). It does not pad
|
|
* out the result like strncpy() does.
|
|
*
|
|
* If libc has strlcpy() then that version will override this
|
|
* implementation:
|
|
*/
|
|
size_t __weak strlcpy(char *dest, const char *src, size_t size)
|
|
{
|
|
size_t ret = strlen(src);
|
|
|
|
if (size) {
|
|
size_t len = (ret >= size) ? size - 1 : ret;
|
|
memcpy(dest, src, len);
|
|
dest[len] = '\0';
|
|
}
|
|
return ret;
|
|
}
|