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Implement POSIX.1e ACL functions

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* Makefile.in (DLL_OFILES): Add sec_posixacl.o.
	(SUBLIBS): Add libacl.a
	(libacl.a): New rule to create libacl.a.
	* common.din: Export POSIX ACL functions as well as most libacl.a
	extensions.
	* fhandler.h (fhander_base::acl_get): New prototype.
	(fhander_base::acl_set): Ditto.
	(fhandler_disk_file::acl_get): Ditto.
	(fhandler_disk_file::acl_set): Ditto.
	* include/acl/libacl.h: New file.
	* include/cygwin/version.h: Bump API minor version.
	* include/sys/acl.h: Drop including cygwin/acl.h.  Accommodate
	throughout Cygwin.  Add POSIX ACL definitions.
	* sec_acl.cc: Include sec_posixacl.h.  Replace ILLEGAL_UID and
	ILLEGAL_GID with ACL_UNDEFINED_ID where sensible.
	(__aclcheck): New internal acl check function to be used for
	Solaris and POSIX ACLs.
	(aclcheck32): Call __aclcheck.
	(__aclcalcmask): New function to compute ACL_MASK value.
	(__aclsort): New internal acl sort function to be used for Solaris
	and POSIX ACLs.
	(aclsort32): Call __aclsort.
	(permtostr): Work directly on provided buffer.
	(__acltotext): New internal acltotext function to be used for
	Solaris and POSIX ACLs.
	(acltotext32): Call __acltotext.
	(__aclfromtext): New internal aclfromtext function to be used for
	Solaris and POSIX ACLs.
	(aclfromtext32): Call __aclfromtext.
	* sec_posixacl.cc: New file implemeting POSIX ACL functions.
	* sec_posixacl.h: New internal header.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2016-01-06 18:41:36 +01:00
parent edd7d93484
commit 9ddf063921
18 changed files with 1849 additions and 300 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
winsup/cygwin/Makefile.in
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@ -267,6 +267,7 @@ DLL_OFILES:= \
sec_acl.o \
sec_auth.o \
sec_helper.o \
sec_posixacl.o \
security.o \
select.o \
sem.o \
@ -443,7 +444,7 @@ endif
API_VER:=$(srcdir)/include/cygwin/version.h
LIB_NAME:=libcygwin.a
SUBLIBS:=libpthread.a libutil.a ${CURDIR}/libm.a ${CURDIR}/libc.a libdl.a libresolv.a librt.a
SUBLIBS:=libpthread.a libutil.a ${CURDIR}/libm.a ${CURDIR}/libc.a libdl.a libresolv.a librt.a libacl.a
EXTRALIBS:=libautomode.a libbinmode.a libtextmode.a libtextreadmode.a
INSTOBJS:=automode.o binmode.o textmode.o textreadmode.o
TARGET_LIBS:=$(LIB_NAME) $(CYGWIN_START) $(GMON_START) $(LIBGMON_A) $(SUBLIBS) $(INSTOBJS) $(EXTRALIBS)
@ -643,6 +644,9 @@ libresolv.a: ${LIB_NAME} minires.o
librt.a: ${LIB_NAME} posix_ipc.o
${speclib} ${@F}
libacl.a: ${LIB_NAME} sec_posixacl.o
${speclib} ${@F}
${EXTRALIBS}: lib%.a: %.o
$(AR) cru $@ $?

39
winsup/cygwin/common.din
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@ -117,6 +117,45 @@ accept = cygwin_accept SIGFE
accept4 SIGFE
access SIGFE
acl SIGFE
acl_add_perm NOSIGFE
acl_calc_mask SIGFE
acl_check NOSIGFE
acl_clear_perms NOSIGFE
acl_cmp SIGFE
acl_copy_entry NOSIGFE
acl_copy_ext NOSIGFE
acl_copy_int NOSIGFE
acl_create_entry SIGFE
acl_delete_def_file SIGFE
acl_delete_entry NOSIGFE
acl_delete_perm NOSIGFE
acl_dup SIGFE
acl_entries NOSIGFE
acl_equiv_mode SIGFE
acl_error NOSIGFE
acl_extended_fd SIGFE
acl_extended_file SIGFE
acl_extended_file_nofollow SIGFE
acl_free SIGFE
acl_from_mode NOSIGFE
acl_from_text SIGFE
acl_get_entry NOSIGFE
acl_get_fd SIGFE
acl_get_file SIGFE
acl_get_perm NOSIGFE
acl_get_permset NOSIGFE
acl_get_qualifier SIGFE
acl_get_tag_type NOSIGFE
acl_init SIGFE
acl_set_fd SIGFE
acl_set_file SIGFE
acl_set_permset NOSIGFE
acl_set_qualifier NOSIGFE
acl_set_tag_type NOSIGFE
acl_size NOSIGFE
acl_to_any_text SIGFE
acl_to_text SIGFE
acl_valid NOSIGFE
aclcheck NOSIGFE
aclfrommode SIGFE
aclfrompbits SIGFE

2
winsup/cygwin/fhandler.cc
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@ -13,7 +13,7 @@ details. */
#include <unistd.h>
#include <stdlib.h>
#include <sys/uio.h>
#include <sys/acl.h>
#include <cygwin/acl.h>
#include <sys/param.h>
#include "cygerrno.h"
#include "perprocess.h"

5
winsup/cygwin/fhandler.h
View File

@ -56,6 +56,7 @@ typedef struct __DIR DIR;
struct dirent;
struct iovec;
struct acl;
struct __acl_t;
enum dirent_states
{
@ -355,6 +356,8 @@ public:
virtual int __reg1 fchmod (mode_t mode);
virtual int __reg2 fchown (uid_t uid, gid_t gid);
virtual int __reg3 facl (int, int, struct acl *);
virtual struct __acl_t * __reg2 acl_get (uint32_t);
virtual int __reg3 acl_set (struct __acl_t *, uint32_t);
virtual ssize_t __reg3 fgetxattr (const char *, void *, size_t);
virtual int __reg3 fsetxattr (const char *, const void *, size_t, int);
virtual int __reg3 fadvise (off_t, off_t, int);
@ -1011,6 +1014,8 @@ class fhandler_disk_file: public fhandler_base
int __reg1 fchmod (mode_t mode);
int __reg2 fchown (uid_t uid, gid_t gid);
int __reg3 facl (int, int, struct acl *);
struct __acl_t * __reg2 acl_get (uint32_t);
int __reg3 acl_set (struct __acl_t *, uint32_t);
ssize_t __reg3 fgetxattr (const char *, void *, size_t);
int __reg3 fsetxattr (const char *, const void *, size_t, int);
int __reg3 fadvise (off_t, off_t, int);

2
winsup/cygwin/fhandler_disk_file.cc
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@ -13,7 +13,7 @@ details. */
#include <winioctl.h>
#include <lm.h>
#include <stdlib.h>
#include <sys/acl.h>
#include <cygwin/acl.h>
#include <sys/statvfs.h>
#include "cygerrno.h"
#include "security.h"

2
winsup/cygwin/fhandler_socket.cc
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@ -41,7 +41,7 @@
#include "wininfo.h"
#include <unistd.h>
#include <sys/param.h>
#include <sys/acl.h>
#include <cygwin/acl.h>
#include "cygtls.h"
#include <sys/un.h>
#include "ntdll.h"

2
winsup/cygwin/fhandler_tty.cc
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@ -12,7 +12,7 @@ details. */
#include "winsup.h"
#include <stdlib.h>
#include <sys/param.h>
#include <sys/acl.h>
#include <cygwin/acl.h>
#include <cygwin/kd.h>
#include "cygerrno.h"
#include "security.h"

2
winsup/cygwin/fhandler_virtual.cc
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@ -10,7 +10,7 @@ Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include <sys/acl.h>
#include <cygwin/acl.h>
#include <sys/statvfs.h>
#include "cygerrno.h"
#include "path.h"

55
winsup/cygwin/include/acl/libacl.h Normal file
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@ -0,0 +1,55 @@
/* acl/libacl.h: Non-POSIX extensions of libacl
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. */
#ifndef _ACL_LIBACL_H
#define _ACL_LIBACL_H
#include <sys/acl.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Sync'd with cygwin/acl.h values. */
#define ACL_MULTI_ERROR (0x4)
#define ACL_DUPLICATE_ERROR (0x5)
#define ACL_ENTRY_ERROR (0x6)
#define ACL_MISS_ERROR (0x7)
/* acl_to_any_text options. */
#define TEXT_ABBREVIATE (0x01)
#define TEXT_NUMERIC_IDS (0x02)
#define TEXT_SOME_EFFECTIVE (0x04)
#define TEXT_ALL_EFFECTIVE (0x08)
#define TEXT_SMART_INDENT (0x10)
extern int acl_check (acl_t __acl, int *__last);
extern int acl_cmp (acl_t __acl1, acl_t __acl2);
extern int acl_entries (acl_t __acl);
extern int acl_equiv_mode (acl_t __acl, mode_t *__mode_p);
extern const char *acl_error (int __code);
extern int acl_extended_fd (int __fd);
extern int acl_extended_file (const char *__path_p);
extern int acl_extended_file_nofollow (const char *__path_p);
extern acl_t acl_from_mode (mode_t __mode);
extern int acl_get_perm (acl_permset_t __permset_d, acl_perm_t __perm);
extern char *acl_to_any_text (acl_t __acl, const char *__prefix,
char __separator, int __options);
#if 0
/* TODO */
struct error_context;
extern int perm_copy_file (const char *, const char *, struct error_context *);
extern int perm_copy_fd (const char *, int, const char *, int,
struct error_context *);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _ACL_LIBACL_H */

3
winsup/cygwin/include/cygwin/version.h
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@ -476,13 +476,14 @@ details. */
292: Export rpmatch.
293: Convert utmpname/utmpxname to int.
294: Export clog10, clog10f.
295: Export POSIX ACL functions.
*/
/* Note that we forgot to bump the api for ualarm, strtoll, strtoull,
sigaltstack, sethostname. */
#define CYGWIN_VERSION_API_MAJOR 0
#define CYGWIN_VERSION_API_MINOR 294
#define CYGWIN_VERSION_API_MINOR 295
/* There is also a compatibity version number associated with the
shared memory regions. It is incremented when incompatible

85
winsup/cygwin/include/sys/acl.h
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@ -12,6 +12,89 @@ details. */
#ifndef _SYS_ACL_H
#define _SYS_ACL_H
#include <cygwin/acl.h>
#include <_ansi.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef __cplusplus
extern "C" {
#endif
/* POSIX ACL types and functions. The implementation is based on the
internal original Solaris implementation as defined in cygwin/acl.h.
However, we don't include cygwin/acl.h from here to avoid poisoning
the namespace. */
/* acl_perm_t constants */
#define ACL_READ (0x4)
#define ACL_WRITE (0x2)
#define ACL_EXECUTE (0x1)
/* acl_tag_t constants, in sync with values from cygwin/acl.h */
#define ACL_UNDEFINED_TAG (0x0000)
#define ACL_USER_OBJ (0x0001)
#define ACL_USER (0x0002)
#define ACL_GROUP_OBJ (0x0004)
#define ACL_GROUP (0x0008)
#define ACL_MASK (0x0010)
#define ACL_OTHER (0x0020)
/* acl_type_t constants */
#define ACL_TYPE_ACCESS (0x0)
#define ACL_TYPE_DEFAULT (0x1)
/* qualifier constant */
#define ACL_UNDEFINED_ID ((id_t) -1)
/* entry_id constants */
#define ACL_FIRST_ENTRY (0x0)
#define ACL_NEXT_ENTRY (0x1)
/* types */
typedef uint32_t acl_perm_t, acl_type_t, acl_tag_t;
typedef uint64_t acl_permset_t;
typedef uint64_t acl_entry_t;
struct __acl_t;
typedef struct __acl_t *acl_t;
extern int acl_add_perm (acl_permset_t __permset_d, acl_perm_t __perm);
extern int acl_calc_mask (acl_t *__acl_p);
extern int acl_clear_perms (acl_permset_t __permset_d);
extern int acl_copy_entry (acl_entry_t __dest_d, acl_entry_t __src_d);
extern ssize_t acl_copy_ext (void *__buf_p, acl_t __acl, ssize_t __size);
extern acl_t acl_copy_int (const void *__buf_p);
extern int acl_create_entry (acl_t *__acl_p, acl_entry_t *__entry_p);
extern int acl_delete_def_file (const char *__path_p);
extern int acl_delete_entry (acl_t __acl, acl_entry_t __entry_d);
extern int acl_delete_perm (acl_permset_t __permset_d, acl_perm_t __perm);
extern acl_t acl_dup (acl_t __acl);
extern int acl_free (void *__obj_p);
extern acl_t acl_from_text (const char *__buf_p);
extern int acl_get_entry (acl_t __acl, int __entry_id,
acl_entry_t *__entry_p);
extern acl_t acl_get_fd (int __fd);
extern acl_t acl_get_file (const char *__path_p, acl_type_t __type);
extern int acl_get_permset (acl_entry_t __entry_d,
acl_permset_t *__permset_p);
extern void *acl_get_qualifier (acl_entry_t __entry_d);
extern int acl_get_tag_type (acl_entry_t __entry_d,
acl_tag_t *__tag_type_p);
extern acl_t acl_init (int __count);
extern int acl_set_fd (int __fd, acl_t __acl);
extern int acl_set_file (const char *__path_p, acl_type_t __type,
acl_t __acl);
extern int acl_set_permset (acl_entry_t __entry_d,
acl_permset_t __permset_d);
extern int acl_set_qualifier (acl_entry_t __entry_d,
const void *__tag_qualifier_p);
extern int acl_set_tag_type (acl_entry_t __entry_d, acl_tag_t __tag_type);
extern ssize_t acl_size (acl_t __acl);
extern char *acl_to_text (acl_t __acl, ssize_t *__len_p);
extern int acl_valid (acl_t __acl);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_ACL_H */

816
winsup/cygwin/sec_acl.cc
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File diff suppressed because it is too large Load Diff

2
winsup/cygwin/sec_helper.cc
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@ -13,7 +13,7 @@ details. */
#include "winsup.h"
#include <stdlib.h>
#include <sys/acl.h>
#include <cygwin/acl.h>
#include <sys/queue.h>
#include <authz.h>
#include <wchar.h>

1052
winsup/cygwin/sec_posixacl.cc Normal file
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File diff suppressed because it is too large Load Diff

68
winsup/cygwin/sec_posixacl.h Normal file
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@ -0,0 +1,68 @@
/* sec_posixacl.h: Internal definitions for POSIX ACLs.
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. */
#include <cygwin/acl.h>
#include <sys/acl.h>
#include <acl/libacl.h>
/* Magic marker for acl_t. */
#define ACL_MAGIC (0xacdccdcadcaccacdULL)
/* Only used internally as a_type for deleted entries. */
#define ACL_DELETED_TAG (0xffff)
/* Only used internally from acl_to_text/acl_to_any_text. */
#define TEXT_END_SEPARATOR (0x1000)
#define TEXT_IS_POSIX (0x2000)
/* Internal ACL representation. */
struct __acl_t
{
uint64_t magic; /* Must be ACL_MAGIC. */
uint16_t max_count; /* Max. number of entries. */
uint16_t count; /* Number of used entries. */
uint16_t deleted; /* Number of used but deleted entries. */
uint16_t next; /* Next entry to be returned by acl_get_entry. */
aclent_t *entry; /* Pointer to variable array of ACL entries. */
};
inline acl_entry_t
__to_entry (acl_t acl, uint16_t idx)
{
return ((uint64_t) idx << 48) | (uint64_t) acl;
}
#define __to_permset(a,i) ((acl_permset_t)__to_entry((a),(i)))
inline acl_t
__from_entry (acl_entry_t entry_d, uint16_t &idx)
{
idx = entry_d >> 48;
acl_t acl = (acl_t) (entry_d & ~((uint64_t) 0xffff << 48));
if (acl->magic != ACL_MAGIC)
return NULL;
if (idx >= acl->count)
return NULL;
if (acl->entry[idx].a_type == ACL_DELETED_TAG)
return NULL;
return acl;
}
#define __from_permset(p,i) __from_entry((acl_permset_t)(p),(i))
/* External (but opaque) ACL representation. */
struct __acl_ext_t
{
uint16_t count; /* Number of used entries. */
aclent_t entry[0]; /* Variable array of ACL entries. */
};
/* Shared functions defined in sec_acl.cc. */
mode_t __aclcalcmask (aclent_t *, int);
int __aclsort (int, aclent_t *);
int __aclcheck (aclent_t *, int, int *, bool);
char *__acltotext (aclent_t *, int, const char *, char, int);
void *__aclfromtext (const char *, int *, bool);

2
winsup/cygwin/security.cc
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@ -15,7 +15,7 @@ details. */
#include "winsup.h"
#include <unistd.h>
#include <stdlib.h>
#include <sys/acl.h>
#include <cygwin/acl.h>
#include "cygerrno.h"
#include "security.h"
#include "path.h"

3
winsup/utils/getfacl.c
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@ -15,8 +15,7 @@ details. */
#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/acl.h>
#include <cygwin/acl.h>
#include <sys/stat.h>
#include <cygwin/version.h>
#include <string.h>

3
winsup/utils/setfacl.c
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@ -20,8 +20,7 @@ details. */
#include <getopt.h>
#include <pwd.h>
#include <grp.h>
#include <sys/types.h>
#include <sys/acl.h>
#include <cygwin/acl.h>
#include <cygwin/version.h>
#ifndef BOOL