[libc][docs] Add pwd.h POSIX header documentation

[kovan]

Add YAML metadata for pwd.h listing all POSIX-mandated functions
(endpwent, getpwent, getpwnam, getpwnam_r, getpwuid,
getpwuid_r, setpwent). This header defines no macros per POSIX.

Add pwd to index.rst and CMakeLists.txt docgen_list.

Verified with python3 docgen.py pwd.h — generates valid RST with correct POSIX links.

Partial fix for #122006

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[llvmbot]

@llvm/pr-subscribers-libc

Author: None (kovan)

Changes

Add YAML metadata for pwd.h listing all POSIX-mandated functions
(endpwent, getpwent, getpwnam, getpwnam_r, getpwuid,
getpwuid_r, setpwent). This header defines no macros per POSIX.

Add pwd to index.rst and CMakeLists.txt docgen_list.

Verified with python3 docgen.py pwd.h — generates valid RST with correct POSIX links.

Partial fix for #122006

---

Full diff: https://github.com/llvm/llvm-project/pull/186292.diff

3 Files Affected:

• (modified) libc/docs/CMakeLists.txt (+1)
• (modified) libc/docs/headers/index.rst (+1)
• (added) libc/utils/docgen/pwd.yaml (+15)

diff --git a/libc/docs/CMakeLists.txt b/libc/docs/CMakeLists.txt
index 68fe9fc545781..b0797740c68ce 100644
--- a/libc/docs/CMakeLists.txt
+++ b/libc/docs/CMakeLists.txt
@@ -56,6 +56,7 @@ if (SPHINX_FOUND)
       netinet/in
       # TODO: https://github.com/llvm/llvm-project/issues/123821
       # pthread
+      pwd
       setjmp
       signal
       stdbit
diff --git a/libc/docs/headers/index.rst b/libc/docs/headers/index.rst
index 573c5d185f38a..541d71f6851fb 100644
--- a/libc/docs/headers/index.rst
+++ b/libc/docs/headers/index.rst
@@ -21,6 +21,7 @@ Implementation Status
    math/index.rst
    net/if
    netinet/in
+   pwd
    search
    setjmp
    signal
diff --git a/libc/utils/docgen/pwd.yaml b/libc/utils/docgen/pwd.yaml
new file mode 100644
index 0000000000000..156a663c8c5e8
--- /dev/null
+++ b/libc/utils/docgen/pwd.yaml
@@ -0,0 +1,15 @@
+functions:
+  endpwent:
+    in-latest-posix: ''
+  getpwent:
+    in-latest-posix: ''
+  getpwnam:
+    in-latest-posix: ''
+  getpwnam_r:
+    in-latest-posix: ''
+  getpwuid:
+    in-latest-posix: ''
+  getpwuid_r:
+    in-latest-posix: ''
+  setpwent:
+    in-latest-posix: ''

[kaladron]

Thank you! Please let me know if you need help commiting after a rebase.

[github-actions]

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