]> git.sesse.net Git - bcachefs-tools-debian/blobdiff - libbcachefs/error.c
Update bcachefs sources to 24c6361e20 bcachefs: Fix a trans path overflow in bch2_btr...
[bcachefs-tools-debian] / libbcachefs / error.c
index f6a895b2ceb7d5d38801b15fc21cc94572b6c80c..762abdf2f283719a9e5f8757f72ecb8926cb8fec 100644 (file)
@@ -68,102 +68,135 @@ void bch2_io_error(struct bch_dev *ca)
 #include "tools-util.h"
 #endif
 
-int bch2_fsck_err(struct bch_fs *c, unsigned flags, const char *fmt, ...)
+static struct fsck_err_state *fsck_err_get(struct bch_fs *c, const char *fmt)
 {
-       struct fsck_err_state *s = NULL;
-       va_list args;
-       bool fix = false, print = true, suppressing = false;
-       char _buf[sizeof(s->buf)], *buf = _buf;
-
-       if (test_bit(BCH_FS_FSCK_DONE, &c->flags)) {
-               va_start(args, fmt);
-               vprintk(fmt, args);
-               va_end(args);
+       struct fsck_err_state *s;
 
-               if (c->opts.errors == BCH_ON_ERROR_continue) {
-                       bch_err(c, "fixing");
-                       return -BCH_ERR_fsck_fix;
-               } else {
-                       bch2_inconsistent_error(c);
-                       return -BCH_ERR_fsck_errors_not_fixed;
-               }
-       }
-
-       mutex_lock(&c->fsck_error_lock);
+       if (test_bit(BCH_FS_FSCK_DONE, &c->flags))
+               return NULL;
 
        list_for_each_entry(s, &c->fsck_errors, list)
-               if (s->fmt == fmt)
-                       goto found;
+               if (s->fmt == fmt) {
+                       /*
+                        * move it to the head of the list: repeated fsck errors
+                        * are common
+                        */
+                       list_move(&s->list, &c->fsck_errors);
+                       return s;
+               }
 
        s = kzalloc(sizeof(*s), GFP_NOFS);
        if (!s) {
                if (!c->fsck_alloc_err)
                        bch_err(c, "kmalloc err, cannot ratelimit fsck errs");
                c->fsck_alloc_err = true;
-               buf = _buf;
-               goto print;
+               return NULL;
        }
 
        INIT_LIST_HEAD(&s->list);
        s->fmt = fmt;
-found:
-       list_move(&s->list, &c->fsck_errors);
-       s->nr++;
-       if (c->opts.ratelimit_errors &&
-           !(flags & FSCK_NO_RATELIMIT) &&
-           s->nr >= FSCK_ERR_RATELIMIT_NR) {
-               if (s->nr == FSCK_ERR_RATELIMIT_NR)
-                       suppressing = true;
-               else
-                       print = false;
+       s->buf = PRINTBUF;
+       list_add(&s->list, &c->fsck_errors);
+       return s;
+}
+
+int bch2_fsck_err(struct bch_fs *c, unsigned flags, const char *fmt, ...)
+{
+       struct fsck_err_state *s = NULL;
+       va_list args;
+       bool print = true, suppressing = false;
+       struct printbuf buf = PRINTBUF, *out = &buf;
+       int ret = -BCH_ERR_fsck_ignore;
+
+       mutex_lock(&c->fsck_error_lock);
+       s = fsck_err_get(c, fmt);
+       if (s) {
+               if (c->opts.ratelimit_errors &&
+                   !(flags & FSCK_NO_RATELIMIT) &&
+                   s->nr >= FSCK_ERR_RATELIMIT_NR) {
+                       if (s->nr == FSCK_ERR_RATELIMIT_NR)
+                               suppressing = true;
+                       else
+                               print = false;
+               }
+
+               printbuf_reset(&s->buf);
+               out = &s->buf;
+               s->nr++;
        }
-       buf             = s->buf;
-print:
+
+       if (!strncmp(fmt, "bcachefs:", 9))
+               prt_printf(out, bch2_log_msg(c, ""));
+
        va_start(args, fmt);
-       vscnprintf(buf, sizeof(_buf), fmt, args);
+       prt_vprintf(out, fmt, args);
        va_end(args);
 
-       if (c->opts.fix_errors == FSCK_OPT_EXIT) {
-               bch_err(c, "%s, exiting", buf);
+       if (test_bit(BCH_FS_FSCK_DONE, &c->flags)) {
+               if (c->opts.errors != BCH_ON_ERROR_continue ||
+                   !(flags & (FSCK_CAN_FIX|FSCK_CAN_IGNORE))) {
+                       prt_str(out, ", shutting down");
+                       bch2_inconsistent_error(c);
+                       ret = -BCH_ERR_fsck_errors_not_fixed;
+               } else if (flags & FSCK_CAN_FIX) {
+                       prt_str(out, ", fixing");
+                       ret = -BCH_ERR_fsck_fix;
+               } else {
+                       prt_str(out, ", continuing");
+                       ret = -BCH_ERR_fsck_ignore;
+               }
+       } else if (c->opts.fix_errors == FSCK_OPT_EXIT) {
+               prt_str(out, ", exiting");
+               ret = -BCH_ERR_fsck_errors_not_fixed;
        } else if (flags & FSCK_CAN_FIX) {
                if (c->opts.fix_errors == FSCK_OPT_ASK) {
-                       printk(KERN_ERR "%s: fix?", buf);
-                       fix = ask_yn();
+                       prt_str(out, ": fix?");
+                       bch2_print_string_as_lines(KERN_ERR, out->buf);
+                       print = false;
+                       ret = ask_yn()
+                               ? -BCH_ERR_fsck_fix
+                               : -BCH_ERR_fsck_ignore;
                } else if (c->opts.fix_errors == FSCK_OPT_YES ||
                           (c->opts.nochanges &&
                            !(flags & FSCK_CAN_IGNORE))) {
-                       if (print)
-                               bch_err(c, "%s, fixing", buf);
-                       fix = true;
+                       prt_str(out, ", fixing");
+                       ret = -BCH_ERR_fsck_fix;
                } else {
-                       if (print)
-                               bch_err(c, "%s, not fixing", buf);
-                       fix = false;
+                       prt_str(out, ", not fixing");
                }
        } else if (flags & FSCK_NEED_FSCK) {
-               if (print)
-                       bch_err(c, "%s (run fsck to correct)", buf);
+               prt_str(out, " (run fsck to correct)");
        } else {
-               if (print)
-                       bch_err(c, "%s (repair unimplemented)", buf);
+               prt_str(out, " (repair unimplemented)");
        }
 
-       if (suppressing)
+       if (ret == -BCH_ERR_fsck_ignore &&
+           (c->opts.fix_errors == FSCK_OPT_EXIT ||
+            !(flags & FSCK_CAN_IGNORE)))
+               ret = -BCH_ERR_fsck_errors_not_fixed;
+
+       if (print)
+               bch2_print_string_as_lines(KERN_ERR, out->buf);
+
+       if (!test_bit(BCH_FS_FSCK_DONE, &c->flags) &&
+           (ret != -BCH_ERR_fsck_fix &&
+            ret != -BCH_ERR_fsck_ignore))
+               bch_err(c, "Unable to continue, halting");
+       else if (suppressing)
                bch_err(c, "Ratelimiting new instances of previous error");
 
        mutex_unlock(&c->fsck_error_lock);
 
-       if (fix) {
+       printbuf_exit(&buf);
+
+       if (ret == -BCH_ERR_fsck_fix) {
                set_bit(BCH_FS_ERRORS_FIXED, &c->flags);
-               return -BCH_ERR_fsck_fix;
        } else {
                set_bit(BCH_FS_ERRORS_NOT_FIXED, &c->flags);
                set_bit(BCH_FS_ERROR, &c->flags);
-               return c->opts.fix_errors == FSCK_OPT_EXIT ||
-                       !(flags & FSCK_CAN_IGNORE)
-                       ? -BCH_ERR_fsck_errors_not_fixed
-                       : -BCH_ERR_fsck_ignore;
        }
+
+       return ret;
 }
 
 void bch2_flush_fsck_errs(struct bch_fs *c)
@@ -174,9 +207,10 @@ void bch2_flush_fsck_errs(struct bch_fs *c)
 
        list_for_each_entry_safe(s, n, &c->fsck_errors, list) {
                if (s->ratelimited)
-                       bch_err(c, "Saw %llu errors like:\n    %s", s->nr, s->buf);
+                       bch_err(c, "Saw %llu errors like:\n    %s", s->nr, s->buf.buf);
 
                list_del(&s->list);
+               printbuf_exit(&s->buf);
                kfree(s);
        }