| Message ID | 20171026011346.5758-1-programmingkidx@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | [libfdt,v4] implement strnlen for systems that need it | expand |
On Wed, Oct 25, 2017 at 09:13:46PM -0400, John Arbuckle wrote: > Prior the Mac OS 10.7, the function strnlen() was not available. This patch > implements strnlen() on Mac OS X versions that are below 10.7. > > Signed-off-by: John Arbuckle <programmingkidx@gmail.com> Applied, thanks. > --- > v4 changes: > - Added check for definition of MAC_OS_X_VERSION_10_7 > - Renamed strnlen to fdt_strnlen > - Added macro that defines strnlen as fdt_strnlen > > v3 changes: > - Replaced loop with memchr() > > v2 changes: > - Simplified the code to make it static inline'ed > - Changed the type of count to size_t > > libfdt/libfdt_env.h | 27 +++++++++++++++++++++++++++ > 1 file changed, 27 insertions(+) > > diff --git a/libfdt/libfdt_env.h b/libfdt/libfdt_env.h > index 952056c..41fac04 100644 > --- a/libfdt/libfdt_env.h > +++ b/libfdt/libfdt_env.h > @@ -109,4 +109,31 @@ static inline fdt64_t cpu_to_fdt64(uint64_t x) > #undef CPU_TO_FDT16 > #undef EXTRACT_BYTE > > +#ifdef __APPLE__ > +#include <AvailabilityMacros.h> > + > +/* strnlen() is not available on Mac OS < 10.7 */ > +# if !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < \ > + MAC_OS_X_VERSION_10_7) > + > +#define strnlen fdt_strnlen > + > +/* > + * fdt_strnlen: returns the length of a string or max_count - which ever is > + * smallest. > + * Input 1 string: the string whose size is to be determined > + * Input 2 max_count: the maximum value returned by this function > + * Output: length of the string or max_count (the smallest of the two) > + */ > +static inline size_t fdt_strnlen(const char *string, size_t max_count) > +{ > + const char *p = memchr(string, 0, max_count); > + return p ? p - string : max_count; > +} > + > +#endif /* !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < > + MAC_OS_X_VERSION_10_7) */ > + > +#endif /* __APPLE__ */ > + > #endif /* _LIBFDT_ENV_H */
diff --git a/libfdt/libfdt_env.h b/libfdt/libfdt_env.h index 952056c..41fac04 100644 --- a/libfdt/libfdt_env.h +++ b/libfdt/libfdt_env.h @@ -109,4 +109,31 @@ static inline fdt64_t cpu_to_fdt64(uint64_t x) #undef CPU_TO_FDT16 #undef EXTRACT_BYTE +#ifdef __APPLE__ +#include <AvailabilityMacros.h> + +/* strnlen() is not available on Mac OS < 10.7 */ +# if !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < \ + MAC_OS_X_VERSION_10_7) + +#define strnlen fdt_strnlen + +/* + * fdt_strnlen: returns the length of a string or max_count - which ever is + * smallest. + * Input 1 string: the string whose size is to be determined + * Input 2 max_count: the maximum value returned by this function + * Output: length of the string or max_count (the smallest of the two) + */ +static inline size_t fdt_strnlen(const char *string, size_t max_count) +{ + const char *p = memchr(string, 0, max_count); + return p ? p - string : max_count; +} + +#endif /* !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < + MAC_OS_X_VERSION_10_7) */ + +#endif /* __APPLE__ */ + #endif /* _LIBFDT_ENV_H */
Prior the Mac OS 10.7, the function strnlen() was not available. This patch implements strnlen() on Mac OS X versions that are below 10.7. Signed-off-by: John Arbuckle <programmingkidx@gmail.com> --- v4 changes: - Added check for definition of MAC_OS_X_VERSION_10_7 - Renamed strnlen to fdt_strnlen - Added macro that defines strnlen as fdt_strnlen v3 changes: - Replaced loop with memchr() v2 changes: - Simplified the code to make it static inline'ed - Changed the type of count to size_t libfdt/libfdt_env.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)