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POSIX: fixed return values to be posix compliant

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px4_read, px4_write, and px4_opctl were not returning the correct
value on error. They were returning -errno vs -1.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>
This commit is contained in:
Mark Charlebois
2015-05-07 09:38:03 -07:00
parent 6db77dc8bb
commit 5e2af2b227
1 changed files with 7 additions and 6 deletions
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src/drivers/device/vdev_posix.cpp
+7 -6
View File
@@ -144,6 +144,7 @@ int px4_close(int fd)
}
if (ret < 0) {
px4_errno = -ret;
ret = PX4_ERROR;
}
return ret;
}
@@ -161,13 +162,14 @@ ssize_t px4_read(int fd, void *buffer, size_t buflen)
}
if (ret < 0) {
px4_errno = -ret;
ret = PX4_ERROR;
}
return ret;
}
ssize_t px4_write(int fd, const void *buffer, size_t buflen)
{
int ret = PX4_ERROR;
int ret;
if (valid_fd(fd)) {
VDev *dev = (VDev *)(filemap[fd]->vdev);
PX4_DEBUG("px4_write fd = %d\n", fd);
@@ -178,13 +180,14 @@ ssize_t px4_write(int fd, const void *buffer, size_t buflen)
}
if (ret < 0) {
px4_errno = -ret;
ret = PX4_ERROR;
}
return ret;
}
int px4_ioctl(int fd, int cmd, unsigned long arg)
{
int ret = PX4_ERROR;
int ret = 0;
if (valid_fd(fd)) {
VDev *dev = (VDev *)(filemap[fd]->vdev);
PX4_DEBUG("px4_ioctl fd = %d\n", fd);
@@ -196,10 +199,8 @@ int px4_ioctl(int fd, int cmd, unsigned long arg)
if (ret < 0) {
px4_errno = -ret;
}
else {
px4_errno = -EINVAL;
}
return ret;
return (ret == 0) ? PX4_OK : PX4_ERROR;
}
int px4_poll(px4_pollfd_struct_t *fds, nfds_t nfds, int timeout)