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wiringPi: Fix non-root user who has gpiomem cannot use gpio binary properly

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Signed-off-by: Yang Deokgyu <secugyu@gmail.com>
This commit is contained in:
Yang Deokgyu
2019-09-11 11:43:05 +09:00
parent 89a55d980e
commit 020ff31733
1 changed files with 2 additions and 1 deletions
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3
gpio/gpio.c
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@@ -1051,6 +1051,7 @@ static void doVersion (char *argv [])
int main (int argc, char *argv []) int main (int argc, char *argv [])
{ {
int i ; int i ;
struct stat statBuf ;
if (getenv ("WIRINGPI_DEBUG") != NULL) { if (getenv ("WIRINGPI_DEBUG") != NULL) {
printf ("gpio: wiringPi debug mode enabled\n") ; printf ("gpio: wiringPi debug mode enabled\n") ;
@@ -1101,7 +1102,7 @@ int main (int argc, char *argv [])
return 0 ; return 0 ;
} }
if (geteuid () != 0) { if (geteuid () != 0 && stat("/dev/gpiomem", &statBuf) != 0) {
fprintf (stderr, "%s: Must be root to run. Program should be suid root. This is an error.\n", argv [0]) ; fprintf (stderr, "%s: Must be root to run. Program should be suid root. This is an error.\n", argv [0]) ;
return 1 ; return 1 ;
} }