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Add support for symbolic links

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This patch adds support for symbolic links in libc, libc plugins, file
system servers and Noux.

Fixes #322.
This commit is contained in:
Christian Prochaska
2012-10-08 14:44:31 +02:00
committed by Norman Feske
parent 4017e592f0
commit e9ac4b653b
45 changed files with 1267 additions and 562 deletions
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4
ports/include/noux_session/client.h
View File

@@ -34,9 +34,11 @@ namespace Noux {
bool syscall(Syscall sc)
{
static bool verbose = false;
bool result = call<Rpc_syscall>(sc);
if (result == false)
if ((result == false) && verbose)
PERR("syscall %s failed", syscall_name(sc));
return result;

8
ports/include/noux_session/noux_session.h
View File

@@ -34,7 +34,6 @@ namespace Noux {
virtual Dataspace_capability sysio_dataspace() = 0;
enum Syscall {
SYSCALL_GETCWD,
SYSCALL_WRITE,
SYSCALL_READ,
SYSCALL_STAT,
@@ -47,7 +46,6 @@ namespace Noux {
SYSCALL_IOCTL,
SYSCALL_LSEEK,
SYSCALL_DIRENT,
SYSCALL_FCHDIR,
SYSCALL_EXECVE,
SYSCALL_SELECT,
SYSCALL_FORK,
@@ -56,8 +54,10 @@ namespace Noux {
SYSCALL_PIPE,
SYSCALL_DUP2,
SYSCALL_UNLINK,
SYSCALL_READLINK,
SYSCALL_RENAME,
SYSCALL_MKDIR,
SYSCALL_SYMLINK,
SYSCALL_SOCKET,
SYSCALL_GETSOCKOPT,
SYSCALL_SETSOCKOPT,
@@ -78,7 +78,6 @@ namespace Noux {
static char const *syscall_name(Syscall sc)
{
switch (sc) {
NOUX_DECL_SYSCALL_NAME(GETCWD)
NOUX_DECL_SYSCALL_NAME(WRITE)
NOUX_DECL_SYSCALL_NAME(READ)
NOUX_DECL_SYSCALL_NAME(STAT)
@@ -91,7 +90,6 @@ namespace Noux {
NOUX_DECL_SYSCALL_NAME(IOCTL)
NOUX_DECL_SYSCALL_NAME(LSEEK)
NOUX_DECL_SYSCALL_NAME(DIRENT)
NOUX_DECL_SYSCALL_NAME(FCHDIR)
NOUX_DECL_SYSCALL_NAME(EXECVE)
NOUX_DECL_SYSCALL_NAME(SELECT)
NOUX_DECL_SYSCALL_NAME(FORK)
@@ -100,8 +98,10 @@ namespace Noux {
NOUX_DECL_SYSCALL_NAME(PIPE)
NOUX_DECL_SYSCALL_NAME(DUP2)
NOUX_DECL_SYSCALL_NAME(UNLINK)
NOUX_DECL_SYSCALL_NAME(READLINK)
NOUX_DECL_SYSCALL_NAME(RENAME)
NOUX_DECL_SYSCALL_NAME(MKDIR)
NOUX_DECL_SYSCALL_NAME(SYMLINK)
NOUX_DECL_SYSCALL_NAME(SOCKET)
NOUX_DECL_SYSCALL_NAME(GETSOCKOPT)
NOUX_DECL_SYSCALL_NAME(SETSOCKOPT)

16
ports/include/noux_session/sysio.h
View File

@@ -286,18 +286,20 @@ namespace Noux {
enum General_error { ERR_FD_INVALID, NUM_GENERAL_ERRORS };
enum Stat_error { STAT_ERR_NO_ENTRY = NUM_GENERAL_ERRORS };
enum Fchdir_error { FCHDIR_ERR_NOT_DIR = NUM_GENERAL_ERRORS };
enum Fcntl_error { FCNTL_ERR_CMD_INVALID = NUM_GENERAL_ERRORS };
enum Ftruncate_error { FTRUNCATE_ERR_NO_PERM = NUM_GENERAL_ERRORS };
enum Open_error { OPEN_ERR_UNACCESSIBLE, OPEN_ERR_NO_PERM,
OPEN_ERR_EXISTS };
enum Execve_error { EXECVE_NONEXISTENT = NUM_GENERAL_ERRORS };
enum Unlink_error { UNLINK_ERR_NO_ENTRY, UNLINK_ERR_NO_PERM };
enum Readlink_error { READLINK_ERR_NO_ENTRY };
enum Rename_error { RENAME_ERR_NO_ENTRY, RENAME_ERR_CROSS_FS,
RENAME_ERR_NO_PERM };
enum Mkdir_error { MKDIR_ERR_EXISTS, MKDIR_ERR_NO_ENTRY,
MKDIR_ERR_NO_SPACE, MKDIR_ERR_NO_PERM,
MKDIR_ERR_NAME_TOO_LONG};
enum Symlink_error { SYMLINK_ERR_EXISTS, SYMLINK_ERR_NO_ENTRY,
SYMLINK_ERR_NAME_TOO_LONG};
enum Read_error { READ_ERR_AGAIN, READ_ERR_WOULD_BLOCK,
READ_ERR_INVALID, READ_ERR_IO };
@@ -338,14 +340,15 @@ namespace Noux {
union {
General_error general;
Stat_error stat;
Fchdir_error fchdir;
Fcntl_error fcntl;
Ftruncate_error ftruncate;
Open_error open;
Execve_error execve;
Unlink_error unlink;
Readlink_error readlink;
Rename_error rename;
Mkdir_error mkdir;
Symlink_error symlink;
Read_error read;
Write_error write;
Accept_error accept;
@@ -360,13 +363,13 @@ namespace Noux {
union {
SYSIO_DECL(getcwd, { }, { Path path; });
SYSIO_DECL(write, { int fd; size_t count; Chunk chunk; },
{ size_t count; });
SYSIO_DECL(stat, { Path path; }, { Stat st; });
SYSIO_DECL(symlink, { Path oldpath; Path newpath; }, { });
SYSIO_DECL(fstat, { int fd; }, { Stat st; });
SYSIO_DECL(ftruncate, { int fd; off_t length; }, { });
@@ -385,11 +388,12 @@ namespace Noux {
SYSIO_DECL(dirent, { int fd; }, { Dirent entry; });
SYSIO_DECL(fchdir, { int fd; }, { });
SYSIO_DECL(read, { int fd; size_t count; },
{ Chunk chunk; size_t count; });
SYSIO_DECL(readlink, { Path path; size_t bufsiz; },
{ Chunk chunk; ssize_t count; });
SYSIO_DECL(execve, { Path filename; Args args; Env env; }, { });
SYSIO_DECL(select, { Select_fds fds; Select_timeout timeout; },