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ODROID-COMMON: Arrange to use /dev/mem if the user grants sudo permission

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This commit is contained in:
Joshua Yang
2019-06-27 15:51:50 +09:00
parent 4b08e7ff71
commit 23f3f5a4e2
5 changed files with 66 additions and 61 deletions
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23
wiringPi/odroidc1.c
View File

@@ -675,21 +675,22 @@ static void init_gpio_mmap (void)
int fd;
/* GPIO mmap setup */
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno)) ;
} else {
if (geteuid () != 0)
return msg (MSG_ERR,
"wiringPiSetup: Must be root. (Did you forget sudo?)\n");
if (!getuid()) {
if ((fd = open ("/dev/mem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/mem: %s\n",
strerror (errno)) ;
strerror (errno));
} else {
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno));
} else
return msg (MSG_ERR,
"wiringPiSetup: /dev/gpiomem doesn't exist. Please try again with sudo.\n");
}
// #define C1_GPIO_BASE 0xC1108000
gpio = (uint32_t *)mmap(0, BLOCK_SIZE, PROT_READ|PROT_WRITE,
MAP_SHARED, fd, C1_GPIO_BASE) ;

23
wiringPi/odroidc2.c
View File

@@ -728,21 +728,22 @@ static void init_gpio_mmap (void)
int fd;
/* GPIO mmap setup */
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno)) ;
} else {
if (geteuid () != 0)
return msg (MSG_ERR,
"wiringPiSetup: Must be root. (Did you forget sudo?)\n");
if (!getuid()) {
if ((fd = open ("/dev/mem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/mem: %s\n",
strerror (errno)) ;
strerror (errno));
} else {
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno));
} else
return msg (MSG_ERR,
"wiringPiSetup: /dev/gpiomem doesn't exist. Please try again with sudo.\n");
}
//#define C2_GPIO_BASE 0xC8834000
gpio = (uint32_t *)mmap(0, BLOCK_SIZE, PROT_READ|PROT_WRITE,
MAP_SHARED, fd, C2_GPIO_BASE) ;

21
wiringPi/odroidn1.c
View File

@@ -631,19 +631,20 @@ static void init_gpio_mmap (void)
int fd;
/* GPIO mmap setup */
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno)) ;
} else {
if (geteuid () != 0)
return msg (MSG_ERR,
"wiringPiSetup: Must be root. (Did you forget sudo?)\n");
if (!getuid()) {
if ((fd = open ("/dev/mem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/mem: %s\n",
strerror (errno)) ;
strerror (errno));
} else {
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno));
} else
return msg (MSG_ERR,
"wiringPiSetup: /dev/gpiomem doesn't exist. Please try again with sudo.\n");
}
// GPIO{0, 1}

23
wiringPi/odroidn2.c
View File

@@ -558,21 +558,22 @@ static void init_gpio_mmap (void)
int fd;
/* GPIO mmap setup */
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno)) ;
} else {
if (geteuid () != 0)
return msg (MSG_ERR,
"wiringPiSetup: Must be root. (Did you forget sudo?)\n");
if (!getuid()) {
if ((fd = open ("/dev/mem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/mem: %s\n",
strerror (errno)) ;
strerror (errno));
} else {
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno));
} else
return msg (MSG_ERR,
"wiringPiSetup: /dev/gpiomem doesn't exist. Please try again with sudo.\n");
}
//#define N2_GPIO_BASE 0xff634000
gpio = (uint32_t *)mmap(0, BLOCK_SIZE, PROT_READ|PROT_WRITE,
MAP_SHARED, fd, N2_GPIO_BASE) ;

23
wiringPi/odroidxu3.c
View File

@@ -649,21 +649,22 @@ static void init_gpio_mmap (void)
int fd;
/* GPIO mmap setup */
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno)) ;
} else {
if (geteuid () != 0)
return msg (MSG_ERR,
"wiringPiSetup: Must be root. (Did you forget sudo?)\n");
if (!getuid()) {
if ((fd = open ("/dev/mem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/mem: %s\n",
strerror (errno)) ;
strerror (errno));
} else {
if (access("/dev/gpiomem",0) == 0) {
if ((fd = open ("/dev/gpiomem", O_RDWR | O_SYNC | O_CLOEXEC) ) < 0)
return msg (MSG_ERR,
"wiringPiSetup: Unable to open /dev/gpiomem: %s\n",
strerror (errno));
} else
return msg (MSG_ERR,
"wiringPiSetup: /dev/gpiomem doesn't exist. Please try again with sudo.\n");
}
//#define ODROIDXU_GPX_BASE 0x13400000 // GPX0,1,2,3
gpio = (uint32_t *)mmap(0, BLOCK_SIZE, PROT_READ|PROT_WRITE,
MAP_SHARED, fd, XU3_GPX_BASE) ;