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tools include: Adopt strstarts() from the kernel

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Replacing prefixcmp(), same purpose, inverted result, so standardize on
the kernel variant, to reduce silly differences among tools/ and the
kernel sources, making it easier for people to work in both codebases.

And then doing:

	if (strstarts(option, "no-"))

Looks clearer than doing:

	if (!prefixcmp(option, "no-"))

To figure out if option starts witn "no-".

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-kaei42gi7lpa8subwtv7eug8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2017-07-20 15:27:39 -03:00
parent 082ab9a18e
commit 8e99b6d453
15 changed files with 50 additions and 46 deletions
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12
tools/include/linux/string.h
View file

@ -1,8 +1,8 @@
#ifndef _TOOLS_LINUX_STRING_H_
#define _TOOLS_LINUX_STRING_H_
#include <linux/types.h> /* for size_t */
#include <string.h>
void *memdup(const void *src, size_t len);
@ -18,6 +18,14 @@ extern size_t strlcpy(char *dest, const char *src, size_t size);
char *str_error_r(int errnum, char *buf, size_t buflen);
int prefixcmp(const char *str, const char *prefix);
/**
* strstarts - does @str start with @prefix?
* @str: string to examine
* @prefix: prefix to look for.
*/
static inline bool strstarts(const char *str, const char *prefix)
{
return strncmp(str, prefix, strlen(prefix)) == 0;
}
#endif /* _LINUX_STRING_H_ */