Date: Tue, 4 Feb 2020 17:15:51 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r357507 - stable/11/sys/compat/linuxkpi/common/src Message-ID: <202002041715.014HFp8T067866@repo.freebsd.org>
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Author: kib Date: Tue Feb 4 17:15:51 2020 New Revision: 357507 URL: https://svnweb.freebsd.org/changeset/base/357507 Log: MFC r357198: Provide support for fdevname(3) on linuxkpi-backed devices. For merge, compat32 support was left out. It is not yet present for FIODGNAME over native cdevs yet. Sponsored by: Mellanox Technologies Modified: stable/11/sys/compat/linuxkpi/common/src/linux_compat.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/compat/linuxkpi/common/src/linux_compat.c ============================================================================== --- stable/11/sys/compat/linuxkpi/common/src/linux_compat.c Tue Feb 4 17:12:09 2020 (r357506) +++ stable/11/sys/compat/linuxkpi/common/src/linux_compat.c Tue Feb 4 17:15:51 2020 (r357507) @@ -1530,7 +1530,9 @@ 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; @@ -1557,6 +1559,20 @@ linux_file_ioctl(struct file *fp, u_long cmd, void *da break; case FIOGETOWN: *(int *)data = fgetown(&filp->f_sigio); + break; + case FIODGNAME: + 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, fgn->buf, i); break; default: error = linux_file_ioctl_sub(fp, filp, fop, cmd, data, td);
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