]>
git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - tools/lib/string.c
2 * linux/tools/lib/string.c
4 * Copied from linux/lib/string.c, where it is:
6 * Copyright (C) 1991, 1992 Linus Torvalds
8 * More specifically, the first copied function was strtobool, which
11 * d0f1fed29e6e ("Add a strtobool function matching semantics of existing in kernel equivalents")
12 * Author: Jonathan Cameron <jic23@cam.ac.uk>
18 #include <linux/string.h>
19 #include <linux/compiler.h>
22 * memdup - duplicate region of memory
24 * @src: memory region to duplicate
25 * @len: memory region length
27 void *memdup(const void *src
, size_t len
)
29 void *p
= malloc(len
);
38 * strtobool - convert common user inputs into boolean values
42 * This routine returns 0 iff the first character is one of 'Yy1Nn0'.
43 * Otherwise it will return -EINVAL. Value pointed to by res is
44 * updated upon finding a match.
46 int strtobool(const char *s
, bool *res
)
66 * strlcpy - Copy a C-string into a sized buffer
67 * @dest: Where to copy the string to
68 * @src: Where to copy the string from
69 * @size: size of destination buffer
71 * Compatible with *BSD: the result is always a valid
72 * NUL-terminated string that fits in the buffer (unless,
73 * of course, the buffer size is zero). It does not pad
74 * out the result like strncpy() does.
76 * If libc has strlcpy() then that version will override this
79 size_t __weak
strlcpy(char *dest
, const char *src
, size_t size
)
81 size_t ret
= strlen(src
);
84 size_t len
= (ret
>= size
) ? size
- 1 : ret
;
85 memcpy(dest
, src
, len
);