{"record":{"id":"b9c28e8b228673ef","repo":"gastownhall/beads","slug":"ensure-beads-gitignore-w-b9c28e","errorCode":null,"errorMessage":"ensure .beads/.gitignore: %w","messagePattern":"ensure \\.beads/\\.gitignore: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"cmd/bd/doctor/gitignore.go","lineNumber":217,"sourceCode":"\t\t\tif err := os.Chmod(gitignorePath, 0600); err != nil {\n\t\t\t\treturn fmt.Errorf(\"chmod .beads/.gitignore: %w\", err)\n\t\t\t}\n\t\t}\n\t}\n\n\texistingContent := string(content)\n\tnewContent := existingContent\n\tif len(newContent) > 0 && !strings.HasSuffix(newContent, \"\\n\") {\n\t\tnewContent += \"\\n\"\n\t}\n\n\tnewContent += \"\\n# Added by bd (missing required patterns)\\n\"\n\tfor _, pattern := range missing {\n\t\tnewContent += pattern + \"\\n\"\n\t}\n\n\tif err := os.WriteFile(gitignorePath, []byte(newContent), 0600); err != nil {\n\t\treturn fmt.Errorf(\"ensure .beads/.gitignore: %w\", err)\n\t}\n\n\t// Tighten permissions on pre-existing files: os.WriteFile's mode argument\n\t// only applies at creation, and the file may predate the 0600 policy.\n\tif err := os.Chmod(gitignorePath, 0600); err != nil {\n\t\treturn fmt.Errorf(\"chmod .beads/.gitignore: %w\", err)\n\t}\n\n\treturn nil\n}\n\n// FixGitignore brings .beads/.gitignore up to date: the full template when\n// the file is missing, append-only for missing required patterns otherwise.\n// It must never rewrite an existing file wholesale — local rules (e.g.\n// keep-exports-off-master negations) live in this file too, and the old\n// full-template rewrite destroyed them (bd-kaaz3).\n// If a redirect exists, it writes to the redirect target's .gitignore instead.\n// repoPath is the project root directory.","sourceCodeStart":199,"sourceCodeEnd":235,"githubUrl":"https://github.com/gastownhall/beads/blob/71377f276968b452ee607177637970a4ff888584/cmd/bd/doctor/gitignore.go#L199-L235","documentation":"This error wraps a failure from os.WriteFile when EnsureGitignoreForBeadsDir tries to rewrite .beads/.gitignore with the required runtime patterns appended. bd appends a '# Added by bd (missing required patterns)' section and each missing pattern, writing with 0600 permissions. If the write fails (permissions, disk space, I/O), the ensure operation aborts with this wrapped error.","triggerScenarios":"EnsureGitignoreForBeadsDir computes missing required patterns and calls os.WriteFile(gitignorePath, []byte(newContent), 0600); WriteFile fails because the directory is not writable, the file is read-only by another user, the disk is full, or an I/O error occurs.","commonSituations":"Running bd doctor --fix in a repo where .beads/ is root-owned or mounted read-only; quota/disk-full conditions; the file was made immutable (chattr +i); CI runners with locked-down workspaces; antivirus or file locks on Windows intercepting writes.","solutions":["Verify the directory is writable: `ls -ld .beads` and `test -w .beads/.gitignore || chmod u+w .beads/.gitignore`","Check disk space/quota (`df -h .`) and free space if the write failed with ENOSPC","If the file is immutable, remove the flag: `sudo chattr -i .beads/.gitignore`","Run bd as the file owner (avoid sudo-then-user mismatches) and re-run `bd doctor --fix`"],"exampleFix":"// before: read-only file blocks WriteFile\n-r--r--r-- .beads/.gitignore\n// after\nchmod u+w .beads/.gitignore && bd doctor --fix","handlingStrategy":"validation","validationCode":"import { statSync, accessSync, constants } from 'node:fs';\ntry {\n  accessSync('.beads', constants.W_OK);\n  accessSync('.beads/.gitignore', constants.W_OK);\n} catch {\n  console.error('.beads/.gitignore not writable; fix permissions/disk before bd doctor --fix');\n  process.exit(1);\n}","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Check disk space/quota before running bulk doctor fixes","Avoid immutable flags (chattr +i) or read-only mounts on .beads/","Use consistent user accounts across CI and local runs","On Windows, exclude .beads from antivirus file-locking"],"tags":["filesystem","write-failed","gitignore","doctor"],"backgroundTag":"file-write-failed","analyzedSha":"71377f276968b452ee607177637970a4ff888584","analyzedAt":"2026-08-30T18:55:39.744Z","schemaVersion":2},"datasetVersion":"2026-08-30T23:17:21.991Z"}