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Handling ACL entries which match the POSIX permissions

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This commit is contained in:
Thomas Schmitt
2009-01-18 18:39:06 +01:00
parent ece6eca9a5
commit 723d23321a
8 changed files with 232 additions and 10 deletions
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21
libisofs/aaip-os-linux.c
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@ -14,6 +14,7 @@
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/acl.h>
#include <attr/xattr.h>
@ -30,6 +31,9 @@
with bit15 of flag.
@param flag Bitfield for control purposes
bit0= obtain default ACL rather than access ACL
bit4= do not return entries which match the st_mode
permissions. If no other ACL entries exist:
set *text = NULL and return 2
bit15= free text and return 1
@return > 0 ok
-1 failure of system ACL service (see errno)
@ -37,6 +41,8 @@
int aaip_get_acl_text(char *path, char **text, int flag)
{
acl_t acl= NULL;
struct stat stbuf;
int ret;
if(flag & (1 << 15)) {
if(*text != NULL)
@ -52,6 +58,16 @@ int aaip_get_acl_text(char *path, char **text, int flag)
acl_free(acl);
if(*text == NULL)
return(-1);
if(flag & 16) {
ret= stat(path, &stbuf);
if(ret != -1)
aaip_cleanout_st_mode(*text, stbuf.st_mode, 0);
if((*text)[0] == 0 || strcmp(*text, "\n") == 0) {
acl_free(text);
*text= NULL;
return(2);
}
}
return(1);
}
@ -69,6 +85,7 @@ int aaip_get_acl_text(char *path, char **text, int flag)
bit2= do not obtain attributes other than ACL
bit3= do not ignore eventual local ACL attribute
(e.g. system.posix_acl_access)
bit4= do not return st_mode permissions in ACL.
bit15= free memory of names, value_lengths, values
@return >0 ok
<=0 error
@ -158,9 +175,11 @@ int aaip_get_attr_list(char *path, size_t *num_attrs, char ***names,
if(flag & 1) { /* Obtain ACL */
/* access-ACL */
ret= aaip_get_acl_text(path, &acl_text, 0);
ret= aaip_get_acl_text(path, &acl_text, flag & 16);
if(ret <= 0)
goto ex;
if(ret == 2)
{ret= 1; goto ex;} /* empty ACL / only st_mode info was found in ACL */
ret= aaip_encode_acl(acl_text, &a_acl_len, &a_acl, flag & 2);
if(ret <= 0)
goto ex;