cregit-Linux how code gets into the kernel

Release 4.18 tools/lib/string.c

Directory: tools/lib
// SPDX-License-Identifier: GPL-2.0
/*
 *  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; }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo39100.00%1100.00%
Total39100.00%1100.00%

/** * 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', or * [oO][NnFf] for "on" and "off". Otherwise it will return -EINVAL. Value * pointed to by res is updated upon finding a match. */
int strtobool(const char *s, bool *res) { if (!s) return -EINVAL; switch (s[0]) { case 'y': case 'Y': case '1': *res = true; return 0; case 'n': case 'N': case '0': *res = false; return 0; case 'o': case 'O': switch (s[1]) { case 'n': case 'N': *res = true; return 0; case 'f': case 'F': *res = false; return 0; default: break; } default: break; } return -EINVAL; }

Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo6152.14%150.00%
Wang Nan5647.86%150.00%
Total117100.00%2100.00%

/** * 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; }

Contributors

PersonTokensPropCommitsCommitProp
Josh Poimboeuf66100.00%1100.00%
Total66100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Arnaldo Carvalho de Melo11145.87%240.00%
Josh Poimboeuf7028.93%120.00%
Wang Nan6024.79%120.00%
Greg Kroah-Hartman10.41%120.00%
Total242100.00%5100.00%
Directory: tools/lib
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