diff options
| author | Harry Cutts <hcutts@google.com> | 2023-10-09 17:28:55 +0000 |
|---|---|---|
| committer | Harry Cutts <hcutts@google.com> | 2023-10-09 17:30:35 +0000 |
| commit | 6acdcbcb9368a3e3df07ed3dc4f03f0cd6f60497 (patch) | |
| tree | 0a456baf314031f176453d6a32bf919592ea958d | |
| parent | 13aa59c62df79bac2a75dcd640d5b5724325db6f (diff) | |
tools: fall back to alphasort when versionsort isn't available
versionsort keeps the device list in proper numerical order (e.g. so
that event10 is sorted after event9, not event1), but is only available
when compiling with the GNU C library.
Signed-off-by: Harry Cutts <hcutts@google.com>
| -rw-r--r-- | tools/find_event_devices.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/tools/find_event_devices.c b/tools/find_event_devices.c index 3a74096..4cfb0ac 100644 --- a/tools/find_event_devices.c +++ b/tools/find_event_devices.c @@ -34,6 +34,14 @@ #include <fcntl.h> #include <unistd.h> +#ifdef __GLIBC__ +// versionsort sorts the device names in proper numerical order (e.g. so that +// event10 is listed after event9, not event1), but is only available in glibc. +static int (*sort_fn)(const struct dirent **, const struct dirent **) = versionsort; +#else +// Fall back to basic alphabetical sorting for other libc implementations. +static int (*sort_fn)(const struct dirent **, const struct dirent **) = alphasort; +#endif #define DEV_INPUT_EVENT "/dev/input" #define EVENT_DEV_NAME "event" @@ -50,7 +58,7 @@ char* find_event_devices(void) int max_device = 0; int rc; - ndev = scandir(DEV_INPUT_EVENT, &namelist, is_event_device, versionsort); + ndev = scandir(DEV_INPUT_EVENT, &namelist, is_event_device, sort_fn); if (ndev <= 0) return NULL; |