git: fdd30e0670d1 - stable/15 - pathconf: Define a new name called _PC_CASE_INSENSITIVE

The branch stable/15 has been updated by rmacklem:

URL: https://cgit.FreeBSD.org/src/commit/?id=fdd30e0670d1e7f329042a312aa01d6623f68567

commit fdd30e0670d1e7f329042a312aa01d6623f68567
Author:     Rick Macklem <rmacklem@FreeBSD.org>
AuthorDate: 2025-10-25 20:37:35 +0000
Commit:     Rick Macklem <rmacklem@FreeBSD.org>
CommitDate: 2025-11-08 02:13:49 +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.
    
    (cherry picked from commit d6864221d88425a079f76ca106f30812c671ca9a)
---
 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 85f67731e1cc..71fe0e62d076 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. */