io_uring/fdinfo: get rid of dumping credentials

It's a faily obscure feature, and registered credentials would for that
mostly be a static thing. Don't bother including code to dump the
personalities indices.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/io_uring/fdinfo.c b/io_uring/fdinfo.c
index b83296eee5f863726c57e2aec57f56ba3d463eba..e9355276ab5d5219df66e32bb09be3ba19aecc2f 100644 (file)
--- a/io_uring/fdinfo.c
+++ b/io_uring/fdinfo.c
@@ -15,36 +15,6 @@
 #include "cancel.h"
 #include "rsrc.h"
 
-static __cold int io_uring_show_cred(struct seq_file *m, unsigned int id,
-               const struct cred *cred)
-{
-       struct user_namespace *uns = seq_user_ns(m);
-       struct group_info *gi;
-       kernel_cap_t cap;
-       int g;
-
-       seq_printf(m, "%5d\n", id);
-       seq_put_decimal_ull(m, "\tUid:\t", from_kuid_munged(uns, cred->uid));
-       seq_put_decimal_ull(m, "\t\t", from_kuid_munged(uns, cred->euid));
-       seq_put_decimal_ull(m, "\t\t", from_kuid_munged(uns, cred->suid));
-       seq_put_decimal_ull(m, "\t\t", from_kuid_munged(uns, cred->fsuid));
-       seq_put_decimal_ull(m, "\n\tGid:\t", from_kgid_munged(uns, cred->gid));
-       seq_put_decimal_ull(m, "\t\t", from_kgid_munged(uns, cred->egid));
-       seq_put_decimal_ull(m, "\t\t", from_kgid_munged(uns, cred->sgid));
-       seq_put_decimal_ull(m, "\t\t", from_kgid_munged(uns, cred->fsgid));
-       seq_puts(m, "\n\tGroups:\t");
-       gi = cred->group_info;
-       for (g = 0; g < gi->ngroups; g++) {
-               seq_put_decimal_ull(m, g ? " " : "",
-                                       from_kgid_munged(uns, gi->gid[g]));
-       }
-       seq_puts(m, "\n\tCapEff:\t");
-       cap = cred->cap_effective;
-       seq_put_hex_ll(m, NULL, cap.val, 16);
-       seq_putc(m, '\n');
-       return 0;
-}
-
 #ifdef CONFIG_NET_RX_BUSY_POLL
 static __cold void common_tracking_show_fdinfo(struct io_ring_ctx *ctx,
                                               struct seq_file *m,
@@ -213,14 +183,6 @@ static void __io_uring_show_fdinfo(struct io_ring_ctx *ctx, struct seq_file *m)
                else
                        seq_printf(m, "%5u: <none>\n", i);
        }
-       if (!xa_empty(&ctx->personalities)) {
-               unsigned long index;
-               const struct cred *cred;
-
-               seq_printf(m, "Personalities:\n");
-               xa_for_each(&ctx->personalities, index, cred)
-                       io_uring_show_cred(m, index, cred);
-       }
 
        seq_puts(m, "PollList:\n");
        for (i = 0; i < (1U << ctx->cancel_table.hash_bits); i++) {