Let configure detect availability of libacl and of Linux listxattr call
and aaip-os work around eventual missing functionality
This commit is contained in:
parent
aae339fe49
commit
bd9b49714f
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@ -10,7 +10,11 @@ lib_LTLIBRARIES = libisofs/libisofs.la
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libisofs_libisofs_la_LDFLAGS = \
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-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
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# ts A80114 : added aaip_0_2.*
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# ts A90123 : Eventually enabling system adapters for ACL and EA
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libisofs_libisofs_la_CFLAGS = $(LIBACL_DEF) $(XATTR_DEF)
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# ts A90114 : added aaip_0_2.*
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libisofs_libisofs_la_SOURCES = \
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libisofs/builder.h \
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@ -64,8 +68,7 @@ libisofs_libisofs_la_SOURCES = \
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libisofs/aaip_0_2.h \
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libisofs/aaip_0_2.c
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libisofs_libisofs_la_LIBADD= \
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$(THREAD_LIBS) \
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-lacl
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$(THREAD_LIBS)
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libinclude_HEADERS = \
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libisofs/libisofs.h
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31
configure.ac
31
configure.ac
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@ -146,6 +146,37 @@ AC_ARG_ENABLE(verbose-debug,
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AC_DEFINE(LIBISOFS_VERBOSE_DEBUG, 1))
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dnl ts A90123
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AC_ARG_ENABLE(libacl,
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[ --enable-libacl Enable use of libacl by libisofs, default=yes],
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, enable_libacl=yes)
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if test x$enable_libacl = xyes; then
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dnl Check whether there is libacl-devel and libacl-runtime.
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dnl If not, erase this macro which would enable use of acl_to_text and others
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LIBACL_DEF="-DLibisofs_with_aaip_acL"
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dnl The empty yes case obviously causes -lacl to be linked
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AC_CHECK_HEADER(sys/acl.h, AC_CHECK_LIB(acl, acl_to_text, , LIBACL_DEF= ), LIBACL_DEF= )
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else
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LIBACL_DEF=
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fi
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AC_SUBST(LIBACL_DEF)
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dnl ts A90123
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AC_ARG_ENABLE(xattr,
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[ --enable-xattr Enable use of xattr by libisofs, default=yes],
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, enable_xattr=yes)
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if test x$enable_xattr = xyes; then
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dnl Check whether there is the header for Linux xattr.
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dnl If not, erase this macro which would enable use of listxattr and others
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XATTR_DEF="-DLibisofs_with_aaip_xattR"
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AC_CHECK_HEADER(attr/xattr.h, AC_CHECK_LIB(c, listxattr, X= , XATTR_DEF= ), XATTR_DEF= )
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else
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XATTR_DEF=
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fi
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AC_SUBST(XATTR_DEF)
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AC_CONFIG_FILES([
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Makefile
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doc/doxygen.conf
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@ -16,7 +16,9 @@
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#include <stdio.h>
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#include <sys/stat.h>
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#ifdef Libisofs_with_aaip_acL
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#include <sys/acl.h>
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#endif
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/* ------------------------------ Getters --------------------------------- */
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@ -33,16 +35,23 @@
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bit15= free text and return 1
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@return > 0 ok
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-1 failure of system ACL service (see errno)
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-2 ACL support not enabled at compile time
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*/
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int aaip_get_acl_text(char *path, char **text, int flag)
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{
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#ifdef Libisofs_with_aaip_acL
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acl_t acl= NULL;
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#endif
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struct stat stbuf;
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int ret;
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if(flag & (1 << 15)) {
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if(*text != NULL)
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#ifdef Libisofs_with_aaip_acL
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acl_free(text);
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#else
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free(text);
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#endif
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*text= NULL;
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return(1);
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}
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@ -52,12 +61,23 @@ int aaip_get_acl_text(char *path, char **text, int flag)
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if(flag & 1)
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return(0);
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#ifdef Libisofs_with_aaip_acL
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acl= acl_get_file(path, ACL_TYPE_ACCESS);
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if(acl == NULL)
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return(-1);
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*text= acl_to_text(acl, NULL);
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acl_free(acl);
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#else /* Libisofs_with_aaip_acL */
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/* ??? >>> Fake ACL */;
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return(-2);
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#endif /* ! Libisofs_with_aaip_acL */
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if(*text == NULL)
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return(-1);
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if(flag & 16) {
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@ -68,7 +88,11 @@ int aaip_get_acl_text(char *path, char **text, int flag)
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(*text)[0]= 0;
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}
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if((*text)[0] == 0 || strcmp(*text, "\n") == 0) {
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#ifdef Libisofs_with_aaip_acL
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acl_free(text);
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#else
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free(text);
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#endif
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*text= NULL;
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return(2);
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}
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@ -136,6 +160,8 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
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(*value_lengths)[i]= 0;
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}
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#ifdef Libisofs_with_aaip_acL
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if(flag & 1) { /* Obtain ACL */
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/* access-ACL */
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ret= aaip_get_acl_text(path, &acl_text, flag & 16);
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@ -159,6 +185,8 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
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(*num_attrs)++;
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}
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#endif /* Libisofs_with_aaip_acL */
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ret= 1;
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ex:;
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if(a_acl != NULL)
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@ -201,9 +229,13 @@ ex:;
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bit0= set default ACL rather than access ACL
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@return > 0 ok
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-1 failure of system ACL service (see errno)
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-2 ACL support not enabled at compile time
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*/
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int aaip_set_acl_text(char *path, char *text, int flag)
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{
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#ifdef Libisofs_with_aaip_acL
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int ret;
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acl_t acl= NULL;
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@ -225,6 +257,13 @@ ex:
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if(acl != NULL)
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acl_free(acl);
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return(ret);
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#else /* Libisofs_with_aaip_acL */
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return(-2);
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#endif /* ! Libisofs_with_aaip_acL */
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}
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@ -242,12 +281,13 @@ ex:
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-3 error with setting ACL
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( -4 error with setting attribute )
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( -5 error with deleting attribute )
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-6 support of xattr not enabled at compile time
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-7 support of ACL not enabled at compile time
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*/
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int aaip_set_attr_list(char *path, size_t num_attrs, char **names,
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size_t *value_lengths, char **values, int flag)
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{
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int ret, has_default_acl= 0;
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int ret, has_default_acl= 0, was_xattr= 0;
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size_t i, consumed, acl_text_fill, list_size= 0;
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char *acl_text= NULL, *list= NULL;
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@ -268,9 +308,15 @@ int aaip_set_attr_list(char *path, size_t num_attrs, char **names,
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if(ret <= 0)
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{ret= -2; goto ex;}
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has_default_acl= (ret == 2);
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#ifdef Libisofs_with_aaip_acL
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ret= aaip_set_acl_text(path, acl_text, 0);
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if(ret <= 0)
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{ret= -3; goto ex;}
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#else
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{ret= -7; goto ex;}
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#endif
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/* "default" ACL */
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if(has_default_acl) {
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free(acl_text);
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acl_text= NULL;
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@ -291,9 +337,12 @@ int aaip_set_attr_list(char *path, size_t num_attrs, char **names,
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if(ret <= 0)
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{ret= -3; goto ex;}
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}
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}
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} else
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was_xattr= 1;
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}
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ret= 1;
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if(was_xattr)
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ret= -6;
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ex:;
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if(acl_text != NULL)
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free(acl_text);
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@ -16,8 +16,13 @@
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#include <stdio.h>
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#include <sys/stat.h>
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#ifdef Libisofs_with_aaip_acL
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#include <sys/acl.h>
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#endif
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#ifdef Libisofs_with_aaip_xattR
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#include <attr/xattr.h>
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#endif
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#define Aaip_acl_attrnamE "system.posix_acl_access"
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@ -39,25 +44,44 @@
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2 only st_mode permissions exist and bit 4 is set
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or empty ACL and bit0 is set
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-1 failure of system ACL service (see errno)
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-2 ACL support not enabled at compile time
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*/
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int aaip_get_acl_text(char *path, char **text, int flag)
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{
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#ifdef Libisofs_with_aaip_acL
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acl_t acl= NULL;
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#endif
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struct stat stbuf;
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int ret;
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if(flag & (1 << 15)) {
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if(*text != NULL)
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#ifdef Libisofs_with_aaip_acL
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acl_free(text);
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#else
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free(text);
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#endif
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*text= NULL;
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return(1);
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}
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*text= NULL;
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#ifdef Libisofs_with_aaip_acL
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acl= acl_get_file(path, (flag & 1) ? ACL_TYPE_DEFAULT : ACL_TYPE_ACCESS);
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if(acl == NULL)
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return(-1);
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*text= acl_to_text(acl, NULL);
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acl_free(acl);
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#else /* Libisofs_with_aaip_acL */
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/* ??? >>> Fake ACL */;
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return(-2);
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#endif /* ! Libisofs_with_aaip_acL */
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if(*text == NULL)
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return(-1);
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if(flag & 16) {
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@ -70,7 +94,11 @@ int aaip_get_acl_text(char *path, char **text, int flag)
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}
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if(flag & (1 | 16)) {
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if((*text)[0] == 0 || strcmp(*text, "\n") == 0) {
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#ifdef Libisofs_with_aaip_acL
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acl_free(text);
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#else
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free(text);
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#endif
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*text= NULL;
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return(2);
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}
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@ -105,16 +133,7 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
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ssize_t list_size= 0, i, num_names= 0, value_ret;
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size_t acl_len= 0;
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unsigned char *acl= NULL;
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#define Aaip_os_linux_use_both_acL yes
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#ifdef Aaip_os_linux_use_both_acL
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char *a_acl_text= NULL, *d_acl_text= NULL;
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#else
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char *acl_text= NULL;
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size_t a_acl_len= 0, d_acl_len= 0;
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unsigned char *a_acl= NULL, *d_acl= NULL;
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#endif
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if(flag & (1 << 15)) { /* Free memory */
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if(*names != NULL)
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@ -129,6 +148,9 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
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/* Set up arrays */
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if(!(flag & 4)) { /* Get xattr names */
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#ifdef Libisofs_with_aaip_xattR
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list_size= listxattr(path, list, 0);
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if(list_size == -1)
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{ret= -1; goto ex;}
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@ -138,11 +160,22 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
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list_size= listxattr(path, list, list_size);
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if(list_size == -1)
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{ret= -1; goto ex;}
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#else /* Libisofs_with_aaip_xattR */
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list= strdup("");
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#endif /* ! Libisofs_with_aaip_xattR */
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for(i= 0; i < list_size; i+= strlen(list + i) + 1)
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num_names++;
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}
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#ifdef Libisofs_with_aaip_acL
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if(flag & 1)
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num_names++;
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#endif
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if(num_names == 0)
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{ret= 1; goto ex;}
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(*names)= calloc(num_names, sizeof(char *));
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@ -166,6 +199,8 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
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(*value_lengths)[i]= 0;
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}
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#ifdef Libisofs_with_aaip_xattR
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if(!(flag & 4)) { /* Get xattr values */
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for(i= 0; i < *num_attrs; i++) {
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if(!(flag & 8))
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@ -189,11 +224,12 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
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}
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}
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#endif /* Libisofs_with_aaip_xattR */
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#ifdef Libisofs_with_aaip_acL
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if(flag & 1) { /* Obtain ACL */
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#ifdef Aaip_os_linux_use_both_acL
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/* access-ACL */
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aaip_get_acl_text(path, &a_acl_text, flag & 16);
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aaip_get_acl_text(path, &d_acl_text, 1);
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if(a_acl_text == NULL && d_acl_text == NULL)
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@ -203,42 +239,6 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
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if(ret <= 0)
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goto ex;
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#else /* Aaip_os_linux_use_both_acL */
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/* access-ACL */
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ret= aaip_get_acl_text(path, &acl_text, flag & 16);
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if(ret <= 0)
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goto ex;
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if(ret == 2)
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{ret= 1; goto ex;} /* empty ACL / only st_mode info was found in ACL */
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ret= aaip_encode_acl(acl_text, &a_acl_len, &a_acl, flag & 2);
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if(ret <= 0)
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goto ex;
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aaip_get_acl_text("", &acl_text, 1 << 15); /* free */
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/* eventually default-ACL */
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ret= aaip_get_acl_text(path, &acl_text, 1);
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if(ret > 0) {
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/* encode and append to a_acl */;
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ret= aaip_encode_acl(acl_text, &d_acl_len, &d_acl, (flag & 2) | 4);
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if(ret <= 0)
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goto ex;
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acl= calloc(a_acl_len + d_acl_len + 1, 1);
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if(acl == NULL)
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{ret= -1; goto ex;}
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if(a_acl_len)
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memcpy(acl, a_acl, a_acl_len);
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if(d_acl_len)
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memcpy(acl + a_acl_len, d_acl, d_acl_len);
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acl_len= a_acl_len + d_acl_len;
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} else {
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acl= a_acl;
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a_acl= NULL;
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acl_len= a_acl_len;
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}
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#endif /* ! Aaip_os_linux_use_both_acL */
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/* Set as attribute with empty name */;
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(*names)[*num_attrs]= strdup("");
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if((*names)[*num_attrs] == NULL)
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@ -249,28 +249,14 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
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(*num_attrs)++;
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}
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#endif /* Libisofs_with_aaip_acL */
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ret= 1;
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ex:;
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#ifdef Aaip_os_linux_use_both_acL
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if(a_acl_text != NULL)
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aaip_get_acl_text("", &a_acl_text, 1 << 15); /* free */
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if(d_acl_text != NULL)
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aaip_get_acl_text("", &d_acl_text, 1 << 15); /* free */
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#else /* Aaip_os_linux_use_both_acL */
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if(a_acl != NULL)
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free(a_acl);
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if(d_acl != NULL)
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free(d_acl);
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if(acl != NULL)
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free(acl);
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if(acl_text != NULL)
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aaip_get_acl_text("", &acl_text, 1 << 15); /* free */
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#endif /* ! Aaip_os_linux_use_both_acL */
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if(ret <= 0 || (flag & (1 << 15))) {
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if(list != NULL)
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free(list);
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@ -304,9 +290,13 @@ ex:;
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bit0= set default ACL rather than access ACL
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@return > 0 ok
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-1 failure of system ACL service (see errno)
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-2 ACL support not enabled at compile time
|
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*/
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int aaip_set_acl_text(char *path, char *text, int flag)
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{
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#ifdef Libisofs_with_aaip_acL
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int ret;
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acl_t acl= NULL;
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@ -322,6 +312,13 @@ ex:
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if(acl != NULL)
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acl_free(acl);
|
||||
return(ret);
|
||||
|
||||
#else /* Libisofs_with_aaip_acL */
|
||||
|
||||
return(-2);
|
||||
|
||||
#endif /* ! Libisofs_with_aaip_acL */
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -338,7 +335,8 @@ ex:
|
|||
-3 error with setting ACL
|
||||
-4 error with setting attribute
|
||||
-5 error with deleting attributes
|
||||
|
||||
-6 support of xattr not enabled at compile time
|
||||
-7 support of ACL not enabled at compile time
|
||||
*/
|
||||
int aaip_set_attr_list(char *path, size_t num_attrs, char **names,
|
||||
size_t *value_lengths, char **values, int flag)
|
||||
|
|
@ -347,6 +345,8 @@ int aaip_set_attr_list(char *path, size_t num_attrs, char **names,
|
|||
size_t i, consumed, acl_text_fill, list_size= 0, acl_idx= 0;
|
||||
char *acl_text= NULL, *list= NULL;
|
||||
|
||||
#ifdef Libisofs_with_aaip_xattR
|
||||
|
||||
if(flag & 2) /* Delete all file attributes */
|
||||
list_size= listxattr(path, list, 0);
|
||||
if(list_size > 0) { /* Delete all file attributes */
|
||||
|
|
@ -367,6 +367,8 @@ int aaip_set_attr_list(char *path, size_t num_attrs, char **names,
|
|||
free(list); list= NULL;
|
||||
}
|
||||
|
||||
#endif /* Libisofs_with_aaip_xattR */
|
||||
|
||||
for(i= 0; i < num_attrs; i++) {
|
||||
if(names[i] == NULL || values[i] == NULL)
|
||||
continue;
|
||||
|
|
@ -379,9 +381,19 @@ int aaip_set_attr_list(char *path, size_t num_attrs, char **names,
|
|||
if((flag & 1) && !(flag & 8))
|
||||
if(strcmp(names[i], Aaip_acl_attrnamE) == 0)
|
||||
continue;
|
||||
|
||||
#ifdef Libisofs_with_aaip_xattR
|
||||
|
||||
ret= setxattr(path, names[i], values[i], value_lengths[i], 0);
|
||||
if(ret == -1)
|
||||
{ret= -4; goto ex;}
|
||||
|
||||
#else
|
||||
|
||||
{ret= -6; goto ex;}
|
||||
|
||||
#endif /* Libisofs_with_aaip_xattR */
|
||||
|
||||
}
|
||||
|
||||
/* Decode ACLs */
|
||||
|
|
@ -401,9 +413,14 @@ int aaip_set_attr_list(char *path, size_t num_attrs, char **names,
|
|||
if(ret <= 0)
|
||||
{ret= -2; goto ex;}
|
||||
has_default_acl= (ret == 2);
|
||||
|
||||
#ifdef Libisofs_with_aaip_acL
|
||||
ret= aaip_set_acl_text(path, acl_text, 0);
|
||||
if(ret <= 0)
|
||||
{ret= -3; goto ex;}
|
||||
#else
|
||||
{ret= -7; goto ex;}
|
||||
#endif
|
||||
/* "default" ACL */
|
||||
if(has_default_acl) {
|
||||
free(acl_text);
|
||||
|
|
|
|||
Loading…
Reference in New Issue