newlib-cygwin/winsup/cygwin/path.h

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/* path.h: path data structures
Copyright 1996, 1997, 1998, 2000 Red Hat, Inc.
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This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
struct suffix_info
{
const char *name;
int addon;
* exceptions.cc (set_console_handler): Don't allocate console_handler_thread_waiter. It is obsolete. (ctrl_c_handler): Don't use console_handler_thread_waiter. * path.cc (hash_path_name): Fix handling of relative names. Make case insensitive. * path.h (suffix_info): Use initializers. * pinfo.h (_pinfo): Avoid initializers for null case. * resource.cc (fill_rusage): Zero rest of rusage structure. * security.cc (set_process_privileges): Don't reopen parent process. Just use hMainProc. * signal.cc (signal): Track when a signal handler has been used. (sigaction): Ditto. * sigproc.cc (pchildren): Use default initializer. (zombies): Ditto. (sigproc_terminate): Avoid closing handles that will be closed on exit anyway. (wait_sig): Send signal to "parent" on EXECing, not FORKing. (wait_subproc): Send SIGCHLD here rather than in proc_wait to avoid potential muto conflicts. * sigproc.h (sigthread): Don't initialize to zero. It's the default. * spawn.cc (spawn_guts): Fill in resources from exec parent prior to termination. * sync.h (muto): Don't initialize to zero. * syscalls.cc (close_all_files): Use one lock around entire loop and call fhandler close/release stuff directly. (_read): Don't use ready_for_read if there are not signal handlers active. * dcrt0.cc (dll_crt0_1): Fix display of "title". (do_exit): Use pinfo exit method to exit. (__api_fatal): Ditto. * exceptions.cc (signal_exit): Ditto. * fork.cc (fork_child): Remove debugging stuff. Use pinfo_fixup_after fork in place of exec_fixup_after_fork. * pinfo.cc (pinfo_fixup_after_fork): New method. (pinfo_fixup_in_spawned_child): Ditto. (_pinfo::exit): New method. (_pinfo::init): Remove recursion. Detect pathological case where pinfo structure already exists for new pid. * pinfo.h (_pinfo): Reorganize slightly. Add new method and new function declarations. * sigproc.cc (proc_exists): Previous simplification was a little to simple. Try harder to detect if a process exists. (proc_terminate): Use PID_EXITED setting to determine if process is still around. (WFSO): Remove debugging statement. (WFMO): Ditto. * spawn.cc (exec_fixup_after_fork): Eliminate. (spawn_guts): Always set old_title to NULL. Is it really needed? Move hexec_proc to pinfo.cc. Call pinfo_fixup_in_spawned_child to eliminate handle link after a spawn. * include/sys/cygwin.h: Remove PID_NOT_IN_USE. Add PID_EXITED.
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suffix_info (const char *s, int addit = 0): name (s), addon (addit) {}
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};
enum pathconv_arg
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{
PC_SYM_FOLLOW = 0x0001,
PC_SYM_NOFOLLOW = 0x0002,
PC_SYM_IGNORE = 0x0004,
PC_SYM_CONTENTS = 0x0008,
PC_FULL = 0x0010,
PC_NULLEMPTY = 0x0020
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};
#define PC_NONULLEMPTY -1
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#include <sys/mount.h>
enum path_types
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{
PATH_NOTHING = 0,
PATH_SYMLINK = MOUNT_SYMLINK,
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PATH_BINARY = MOUNT_BINARY,
PATH_EXEC = MOUNT_EXEC,
PATH_CYGWIN_EXEC = MOUNT_CYGWIN_EXEC,
PATH_ALL_EXEC = PATH_CYGWIN_EXEC | PATH_EXEC,
PATH_HASBUGGYOPEN = 0x20000000,
PATH_SOCKET = 0x40000000,
PATH_HASACLS = 0x80000000
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};
class path_conv
{
char path[MAX_PATH];
public:
unsigned path_flags;
int has_acls () {return path_flags & PATH_HASACLS;}
int hasgood_inode () {return path_flags & PATH_HASACLS;} // Not strictly correct
int has_buggy_open () {return path_flags & PATH_HASBUGGYOPEN;}
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int isbinary () {return path_flags & PATH_BINARY;}
int issymlink () {return path_flags & PATH_SYMLINK;}
int issocket () {return path_flags & PATH_SOCKET;}
int isexec () {return path_flags & PATH_ALL_EXEC;}
int iscygexec () {return path_flags & PATH_CYGWIN_EXEC;}
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void set_binary () {path_flags |= PATH_BINARY;}
void set_symlink () {path_flags |= PATH_SYMLINK;}
void set_exec (int x = 1) {path_flags |= x ? PATH_EXEC : PATH_NOTHING;}
void set_has_acls (int x = 1) {path_flags |= x ? PATH_HASACLS : PATH_NOTHING;}
void set_has_buggy_open (int x = 1) {path_flags |= x ? PATH_HASBUGGYOPEN : PATH_NOTHING;}
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char *known_suffix;
int error;
DWORD devn;
int unit;
DWORD fileattr;
void check (const char *src, unsigned opt = PC_SYM_FOLLOW,
const suffix_info *suffixes = NULL) __attribute__ ((regparm(3)));
path_conv (int, const char *src, unsigned opt = PC_SYM_FOLLOW,
const suffix_info *suffixes = NULL)
{
check (src, opt, suffixes);
}
path_conv (const char *src, unsigned opt = PC_SYM_FOLLOW,
const suffix_info *suffixes = NULL)
{
check (src, opt | PC_NULLEMPTY, suffixes);
}
path_conv (): path_flags (0), known_suffix (NULL), error (0), devn (0), unit (0), fileattr (0xffffffff) {path[0] = '\0';}
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inline char *get_win32 () { return path; }
operator char *() {return path; }
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BOOL is_device () {return devn != FH_BAD;}
DWORD get_devn () {return devn == FH_BAD ? (DWORD) FH_DISK : devn;}
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short get_unitn () {return devn == FH_BAD ? 0 : unit;}
DWORD file_attributes () {return fileattr;}
};
/* Symlink marker */
#define SYMLINK_COOKIE "!<symlink>"
/* Socket marker */
#define SOCKET_COOKIE "!<socket >"
/* Maximum depth of symlinks (after which ELOOP is issued). */
#define MAX_LINK_DEPTH 10
int __stdcall get_device_number (const char *name, int &unit, BOOL from_conv = FALSE) __attribute__ ((regparm(3)));
int __stdcall slash_unc_prefix_p (const char *path) __attribute__ ((regparm(1)));
int __stdcall check_null_empty_path (const char *name) __attribute__ ((regparm(1)));
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const char * __stdcall find_exec (const char *name, path_conv& buf, const char *winenv = "PATH=",
int null_if_notfound = 0, const char **known_suffix = NULL) __attribute__ ((regparm(3)));
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/* Common macros for checking for invalid path names */
#define check_null_empty_path_errno(src) \
({ \
int __err; \
if ((__err = check_null_empty_path(src))) \
set_errno (__err); \
__err; \
})
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#define isdrive(s) (isalpha (*(s)) && (s)[1] == ':')
static inline bool
has_exec_chars (const char *buf, int len)
{
return len >= 2 &&
((buf[0] == '#' && buf[1] == '!') ||
(buf[0] == ':' && buf[1] == '\n') ||
(buf[0] == 'M' && buf[1] == 'Z'));
}
/* cwd cache stuff. */
class muto;
struct cwdstuff
{
char *posix;
char *win32;
DWORD hash;
muto *lock;
char *get (char *buf, int need_posix = 1, int with_chroot = 0, unsigned ulen = MAX_PATH);
DWORD get_hash ();
void init ();
void fixup_after_exec (char *win32, char *posix, DWORD hash);
bool get_initial ();
void copy (char * &posix_cwd, char * &win32_cwd, DWORD hash_cwd);
void set (const char *win32_cwd, const char *posix_cwd = NULL);
};
extern cwdstuff cygcwd;