svn commit: r357198 - head/sys/compat/linuxkpi/common/src
Konstantin Belousov
kib at FreeBSD.org
Tue Jan 28 11:22:21 UTC 2020
Author: kib
Date: Tue Jan 28 11:22:20 2020
New Revision: 357198
URL: https://svnweb.freebsd.org/changeset/base/357198
Log:
Provide support for fdevname(3) on linuxkpi-backed devices.
Reported and tested by: manu
Reviewed by: hselasky, manu
Sponsored by: Mellanox Technologies
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D23386
Modified:
head/sys/compat/linuxkpi/common/src/linux_compat.c
Modified: head/sys/compat/linuxkpi/common/src/linux_compat.c
==============================================================================
--- head/sys/compat/linuxkpi/common/src/linux_compat.c Tue Jan 28 10:09:05 2020 (r357197)
+++ head/sys/compat/linuxkpi/common/src/linux_compat.c Tue Jan 28 11:22:20 2020 (r357198)
@@ -1526,7 +1526,9 @@ linux_file_ioctl(struct file *fp, u_long cmd, void *da
struct linux_file *filp;
const struct file_operations *fop;
struct linux_cdev *ldev;
- int error;
+ struct fiodgname_arg *fgn;
+ const char *p;
+ int error, i;
error = 0;
filp = (struct linux_file *)fp->f_data;
@@ -1553,6 +1555,23 @@ linux_file_ioctl(struct file *fp, u_long cmd, void *da
break;
case FIOGETOWN:
*(int *)data = fgetown(&filp->f_sigio);
+ break;
+ case FIODGNAME:
+#ifdef COMPAT_FREEBSD32
+ case FIODGNAME_32:
+#endif
+ if (filp->f_cdev == NULL || filp->f_cdev->cdev == NULL) {
+ error = ENXIO;
+ break;
+ }
+ fgn = data;
+ p = devtoname(filp->f_cdev->cdev);
+ i = strlen(p) + 1;
+ if (i > fgn->len) {
+ error = EINVAL;
+ break;
+ }
+ error = copyout(p, fiodgname_buf_get_ptr(fgn, cmd), i);
break;
default:
error = linux_file_ioctl_sub(fp, filp, fop, cmd, data, td);
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