diff options
Diffstat (limited to 'include/android-ashmem.h')
-rw-r--r-- | include/android-ashmem.h | 84 |
1 files changed, 43 insertions, 41 deletions
diff --git a/include/android-ashmem.h b/include/android-ashmem.h index 6939e06d..91699b27 100644 --- a/include/android-ashmem.h +++ b/include/android-ashmem.h @@ -1,81 +1,83 @@ #ifdef __ANDROID__ -#ifndef _ANDROID_ASHMEM_H -#define _ANDROID_ASHMEM_H - -#include <fcntl.h> -#include <linux/ashmem.h> -#include <sys/ioctl.h> -#include <sys/mman.h> - -#if __ANDROID_API__ >= 26 -#define shmat bionic_shmat -#define shmctl bionic_shmctl -#define shmdt bionic_shmdt -#define shmget bionic_shmget -#endif -#include <sys/shm.h> -#undef shmat -#undef shmctl -#undef shmdt -#undef shmget -#include <stdio.h> - -#define ASHMEM_DEVICE "/dev/ashmem" + #ifndef _ANDROID_ASHMEM_H + #define _ANDROID_ASHMEM_H + + #include <fcntl.h> + #include <linux/ashmem.h> + #include <sys/ioctl.h> + #include <sys/mman.h> + + #if __ANDROID_API__ >= 26 + #define shmat bionic_shmat + #define shmctl bionic_shmctl + #define shmdt bionic_shmdt + #define shmget bionic_shmget + #endif + #include <sys/shm.h> + #undef shmat + #undef shmctl + #undef shmdt + #undef shmget + #include <stdio.h> + + #define ASHMEM_DEVICE "/dev/ashmem" int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf) { + int ret = 0; if (__cmd == IPC_RMID) { - int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL); + + int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL); struct ashmem_pin pin = {0, length}; ret = ioctl(__shmid, ASHMEM_UNPIN, &pin); close(__shmid); + } return ret; + } int shmget(key_t __key, size_t __size, int __shmflg) { - (void) __shmflg; - int fd, ret; + + (void)__shmflg; + int fd, ret; char ourkey[11]; fd = open(ASHMEM_DEVICE, O_RDWR); - if (fd < 0) - return fd; + if (fd < 0) return fd; sprintf(ourkey, "%d", __key); ret = ioctl(fd, ASHMEM_SET_NAME, ourkey); - if (ret < 0) - goto error; + if (ret < 0) goto error; ret = ioctl(fd, ASHMEM_SET_SIZE, __size); - if (ret < 0) - goto error; + if (ret < 0) goto error; return fd; error: close(fd); return ret; + } void *shmat(int __shmid, const void *__shmaddr, int __shmflg) { - (void) __shmflg; - int size; + + (void)__shmflg; + int size; void *ptr; size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL); - if (size < 0) { - return NULL; - } + if (size < 0) { return NULL; } ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0); - if (ptr == MAP_FAILED) { - return NULL; - } + if (ptr == MAP_FAILED) { return NULL; } return ptr; + } -#endif /* !_ANDROID_ASHMEM_H */ -#endif /* !__ANDROID__ */ + #endif /* !_ANDROID_ASHMEM_H */ +#endif /* !__ANDROID__ */ + |