X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=os%2Fos-android.h;h=3c050776249c426a75834e3cb244f3a844cc09aa;hp=7ce312854806566252c376ab11369cde4dba5ac1;hb=de5ed0e4d398bc9d4576f9b2b82d7686989c27e1;hpb=3714a963c0945999eb4b583022a734aa5093b992

diff --git a/os/os-android.h b/os/os-android.h
index 7ce31285..3c050776 100644
--- a/os/os-android.h
+++ b/os/os-android.h
@@ -7,6 +7,7 @@
 #include <sys/mman.h>
 #include <sys/uio.h>
 #include <sys/syscall.h>
+#include <sys/sysmacros.h>
 #include <sys/vfs.h>
 #include <unistd.h>
 #include <fcntl.h>
@@ -17,7 +18,6 @@
 #include <asm/byteorder.h>
 
 #include "./os-linux-syscall.h"
-#include "binject.h"
 #include "../file.h"
 
 #ifndef __has_builtin         // Optional of course.
@@ -60,19 +60,17 @@
 
 #ifndef CONFIG_NO_SHM
 /*
- * The Android NDK doesn't currently export <sys/shm.h>, so define the
- * necessary stuff here.
+ * Bionic doesn't support SysV shared memeory, so implement it using ashmem
  */
-
-#include <sys/shm.h>
-#define SHM_HUGETLB    04000
-
 #include <stdio.h>
 #include <linux/ashmem.h>
+#include <linux/shm.h>
+#define shmid_ds shmid64_ds
+#define SHM_HUGETLB    04000
 
 #define ASHMEM_DEVICE	"/dev/ashmem"
 
-static inline int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf)
+static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
 {
 	int ret=0;
 	if (__cmd == IPC_RMID)
@@ -85,7 +83,7 @@ static inline int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf)
 	return ret;
 }
 
-static inline int shmget (key_t __key, size_t __size, int __shmflg)
+static inline int shmget(key_t __key, size_t __size, int __shmflg)
 {
 	int fd,ret;
 	char keybuf[11];
@@ -99,7 +97,8 @@ static inline int shmget (key_t __key, size_t __size, int __shmflg)
 	if (ret < 0)
 		goto error;
 
-	ret = ioctl(fd, ASHMEM_SET_SIZE, __size);
+	/* Stores size in first 8 bytes, allocate extra space */
+	ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
 	if (ret < 0)
 		goto error;
 
@@ -110,21 +109,22 @@ error:
 	return ret;
 }
 
-static inline void *shmat (int __shmid, const void *__shmaddr, int __shmflg)
+static inline void *shmat(int __shmid, const void *__shmaddr, int __shmflg)
 {
-	size_t *ptr, size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
-	ptr = mmap(NULL, size + sizeof(size_t), PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
-	*ptr = size;    //save size at beginning of buffer, for use with munmap
-	return &ptr[1];
+	size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
+	/* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
+	uint64_t *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
+	/* Save size at beginning of buffer, for use with munmap */
+	*ptr = size;
+	return ptr + 1;
 }
 
 static inline int shmdt (const void *__shmaddr)
 {
-	size_t *ptr, size;
-	ptr = (size_t *)__shmaddr;
-	ptr--;
-	size = *ptr;    //find mmap size which we stored at the beginning of the buffer
-	return munmap((void *)ptr, size + sizeof(size_t));
+	/* Find mmap size which we stored at the beginning of the buffer */
+	uint64_t *ptr = (uint64_t *)__shmaddr - 1;
+	size_t size = *ptr;
+	return munmap(ptr, size);
 }
 #endif
 
@@ -201,23 +201,6 @@ static inline unsigned long long os_phys_mem(void)
 	return (unsigned long long) pages * (unsigned long long) pagesize;
 }
 
-typedef struct { unsigned short r[3]; } os_random_state_t;
-
-static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
-{
-	rs->r[0] = seed & 0xffff;
-	seed >>= 16;
-	rs->r[1] = seed & 0xffff;
-	seed >>= 16;
-	rs->r[2] = seed & 0xffff;
-	seed48(rs->r);
-}
-
-static inline long os_random_long(os_random_state_t *rs)
-{
-	return nrand48(rs->r);
-}
-
 #ifdef O_NOATIME
 #define FIO_O_NOATIME	O_NOATIME
 #else
@@ -273,7 +256,7 @@ static inline unsigned long long get_fs_free_size(const char *path)
 	return ret;
 }
 
-static inline int os_trim(int fd, unsigned long long start,
+static inline int os_trim(struct fio_file *f, unsigned long long start,
 			  unsigned long long len)
 {
 	uint64_t range[2];
@@ -281,7 +264,7 @@ static inline int os_trim(int fd, unsigned long long start,
 	range[0] = start;
 	range[1] = len;
 
-	if (!ioctl(fd, BLKDISCARD, range))
+	if (!ioctl(f->fd, BLKDISCARD, range))
 		return 0;
 
 	return errno;