git: 6369544278b2 - main - cred: Make group_is_supplementary() public; New group_is_primary()

The branch main has been updated by olce:

URL: https://cgit.FreeBSD.org/src/commit/?id=6369544278b2e4fb5203b10dab466ff7c72c0a25

commit 6369544278b2e4fb5203b10dab466ff7c72c0a25
Author:     Olivier Certner <olce@FreeBSD.org>
AuthorDate: 2024-07-19 09:54:35 +0000
Commit:     Olivier Certner <olce@FreeBSD.org>
CommitDate: 2024-11-02 20:37:40 +0000

    cred: Make group_is_supplementary() public; New group_is_primary()
    
    Reviewed by:    mhorne
    Approved by:    markj (mentor)
    MFC after:      3 days
    Differential Revision:  https://reviews.freebsd.org/D46908
---
 sys/kern/kern_prot.c |  2 +-
 sys/sys/ucred.h      | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/sys/kern/kern_prot.c b/sys/kern/kern_prot.c
index 5ba5afc52915..ed20950b12e5 100644
--- a/sys/kern/kern_prot.c
+++ b/sys/kern/kern_prot.c
@@ -1289,7 +1289,7 @@ sys___setugid(struct thread *td, struct __setugid_args *uap)
 /*
  * Returns whether gid designates a supplementary group in cred.
  */
-static bool
+bool
 group_is_supplementary(const gid_t gid, const struct ucred *const cred)
 {
 
diff --git a/sys/sys/ucred.h b/sys/sys/ucred.h
index ee72af000a58..9fb3c63bbfdf 100644
--- a/sys/sys/ucred.h
+++ b/sys/sys/ucred.h
@@ -155,6 +155,17 @@ void	crcowfree(struct thread *td);
 void	cru2x(struct ucred *cr, struct xucred *xcr);
 void	cru2xt(struct thread *td, struct xucred *xcr);
 void	crsetgroups(struct ucred *cr, int n, gid_t *groups);
+
+/*
+ * Returns whether gid designates a primary group in cred.
+ */
+static inline bool
+group_is_primary(const gid_t gid, const struct ucred *const cred)
+{
+	return (gid == cred->cr_groups[0] || gid == cred->cr_rgid ||
+	    gid == cred->cr_svgid);
+}
+bool	group_is_supplementary(const gid_t gid, const struct ucred *const cred);
 bool	groupmember(gid_t gid, const struct ucred *cred);
 bool	realgroupmember(gid_t gid, const struct ucred *cred);
 #endif /* _KERNEL */