fs/smb/client/cifsroot.c

Source file repositories/reference/linux-study-clean/fs/smb/client/cifsroot.c

File Facts

System
Linux kernel
Corpus path
fs/smb/client/cifsroot.c
Extension
.c
Size
2104 bytes
Lines
95
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.

Dependency Surface

Detected Declarations

Annotated Snippet

if (len > sizeof(root_dev)) {
			pr_err("Root-CIFS: UNC path too long\n");
			return 1;
		}
		strscpy(root_dev, line, len);
		srvaddr = parse_srvaddr(&line[2], s);
		if (*s) {
			int n = snprintf(root_opts,
					 sizeof(root_opts), "%s,%s",
					 DEFAULT_MNT_OPTS, s + 1);
			if (n >= sizeof(root_opts)) {
				pr_err("Root-CIFS: mount options string too long\n");
				root_opts[sizeof(root_opts)-1] = '\0';
				return 1;
			}
		}
	}

	root_server_addr = srvaddr;

	return 1;
}

__setup("cifsroot=", cifs_root_setup);

int __init cifs_root_data(char **dev, char **opts)
{
	if (!root_dev[0] || root_server_addr == htonl(INADDR_NONE)) {
		pr_err("Root-CIFS: no SMB server address\n");
		return -1;
	}

	*dev = root_dev;
	*opts = root_opts;

	return 0;
}

Annotation

Implementation Notes