fs/cramfs/uncompress.c

File Facts

System

Linux kernel

Corpus path

fs/cramfs/uncompress.c

Extension

.c

Size

1807 bytes

Lines

81

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.

Dependency Surface

• linux/kernel.h
• linux/errno.h
• linux/vmalloc.h
• linux/zlib.h
• internal.h

Detected Declarations

• function cramfs_uncompress_block
• function cramfs_uncompress_init
• function cramfs_uncompress_exit

Annotated Snippet

if (!stream.workspace) {
			initialized = 0;
			return -ENOMEM;
		}
		stream.next_in = NULL;
		stream.avail_in = 0;
		zlib_inflateInit(&stream);
	}
	return 0;
}

void cramfs_uncompress_exit(void)
{
	if (!--initialized) {
		zlib_inflateEnd(&stream);
		vfree(stream.workspace);
	}
}

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/errno.h`, `linux/vmalloc.h`, `linux/zlib.h`, `internal.h`.
• Detected declarations: `function cramfs_uncompress_block`, `function cramfs_uncompress_init`, `function cramfs_uncompress_exit`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.