git: d6864221d884 - main - pathconf: Define a new name called _PC_CASE_INSENSITIVE

The branch main has been updated by rmacklem:

URL: https://cgit.FreeBSD.org/src/commit/?id=d6864221d88425a079f76ca106f30812c671ca9a

commit d6864221d88425a079f76ca106f30812c671ca9a
Author:     Rick Macklem <rmacklem@FreeBSD.org>
AuthorDate: 2025-10-25 20:37:35 +0000
Commit:     Rick Macklem <rmacklem@FreeBSD.org>
CommitDate: 2025-10-25 20:37:35 +0000

    pathconf: Define a new name called _PC_CASE_INSENSITIVE
    
    Some FreeBSD file systems (msdosfs and optionally ZFS)
    handle case insensitive file name lookup.
    NFS (v3 and 4) provide an attribute to indicate this
    capability, but without this patch, the NFS server does
    not know if the file system does support this.
    
    This patch adds the pathconf name_PC_CASE_INSENSITIVE
    that can be used by the NFS server or user programs to
    check for this feature.
    
    Reviewed by:    kib
    MFC after:      2 weeks
    Differential Revision:  https://reviews.freebsd.org/D53349
---
 sys/fs/msdosfs/msdosfs_vnops.c | 3 +++
 sys/kern/vfs_default.c         | 1 +
 sys/sys/unistd.h               | 1 +
 3 files changed, 5 insertions(+)

diff --git a/sys/fs/msdosfs/msdosfs_vnops.c b/sys/fs/msdosfs/msdosfs_vnops.c
index 33e0d94954d7..6dfac1b4ebd2 100644
--- a/sys/fs/msdosfs/msdosfs_vnops.c
+++ b/sys/fs/msdosfs/msdosfs_vnops.c
@@ -1944,6 +1944,9 @@ msdosfs_pathconf(struct vop_pathconf_args *ap)
 	case _PC_HAS_HIDDENSYSTEM:
 		*ap->a_retval = 1;
 		return (0);
+	case _PC_CASE_INSENSITIVE:
+		*ap->a_retval = 1;
+		return (0);
 	default:
 		return (vop_stdpathconf(ap));
 	}
diff --git a/sys/kern/vfs_default.c b/sys/kern/vfs_default.c
index 05d1120030f3..4eca09aef145 100644
--- a/sys/kern/vfs_default.c
+++ b/sys/kern/vfs_default.c
@@ -458,6 +458,7 @@ vop_stdpathconf(struct vop_pathconf_args *ap)
 		case _PC_HAS_NAMEDATTR:
 		case _PC_HAS_HIDDENSYSTEM:
 		case _PC_CLONE_BLKSIZE:
+		case _PC_CASE_INSENSITIVE:
 			*ap->a_retval = 0;
 			return (0);
 		default:
diff --git a/sys/sys/unistd.h b/sys/sys/unistd.h
index 5743dc1c8033..29adf6b59425 100644
--- a/sys/sys/unistd.h
+++ b/sys/sys/unistd.h
@@ -160,6 +160,7 @@
 #define	_PC_XATTR_EXISTS	_PC_HAS_NAMEDATTR	/* Solaris Compatible */
 #define	_PC_HAS_HIDDENSYSTEM	68
 #define	_PC_CLONE_BLKSIZE	69
+#define	_PC_CASE_INSENSITIVE	70
 #endif
 
 /* From OpenSolaris, used by SEEK_DATA/SEEK_HOLE. */