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Merge "Inline implementation of qemu_pipe_open"

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This commit is contained in:
Vladimir Chtchetkine 2011-08-03 10:50:58 -07:00 committed by Android Code Review
commit da51d1ca14
1 changed files with 46 additions and 3 deletions
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49
include/hardware/qemu_pipe.h
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@ -17,8 +17,18 @@
#define ANDROID_INCLUDE_HARDWARE_QEMU_PIPE_H
#include <sys/cdefs.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <hardware/qemud.h>
#include <hardware/qemu_pipe.h>
#include <pthread.h> /* for pthread_once() */
#include <stdlib.h>
#include <stdio.h>
__BEGIN_DECLS
#ifndef D
# define D(...) do{}while(0)
#endif
/* Try to open a new Qemu fast-pipe. This function returns a file descriptor
* that can be used to communicate with a named service managed by the
@ -42,8 +52,41 @@ __BEGIN_DECLS
* except for a few special cases (e.g. GSM modem), where EBUSY will be
* returned if more than one client tries to connect to it.
*/
extern int qemu_pipe_open(const char* pipeName);
static __inline__ int
qemu_pipe_open(const char* pipeName)
{
char buff[256];
int buffLen;
int fd, ret;
__END_DECLS
if (pipeName == NULL || pipeName[0] == '\0') {
errno = EINVAL;
return -1;
}
snprintf(buff, sizeof buff, "pipe:%s", pipeName);
fd = open("/dev/qemu_pipe", O_RDWR);
if (fd < 0) {
D("%s: Could not open /dev/qemu_pipe: %s", __FUNCTION__, strerror(errno));
errno = ENOSYS;
return -1;
}
buffLen = strlen(buff);
ret = TEMP_FAILURE_RETRY(write(fd, buff, buffLen+1));
if (ret != buffLen+1) {
D("%s: Could not connect to %s pipe service: %s", __FUNCTION__, pipeName, strerror(errno));
if (ret == 0) {
errno = ECONNRESET;
} else if (ret > 0) {
errno = EINVAL;
}
return -1;
}
return fd;
}
#endif /* ANDROID_INCLUDE_HARDWARE_QEMUD_PIPE_H */