diff options
Diffstat (limited to 'source3/lib/system.c')
| -rw-r--r-- | source3/lib/system.c | 192 |
1 files changed, 183 insertions, 9 deletions
diff --git a/source3/lib/system.c b/source3/lib/system.c index 7434cbe35e..a2e5352aa5 100644 --- a/source3/lib/system.c +++ b/source3/lib/system.c @@ -1373,10 +1373,17 @@ ssize_t sys_getxattr (const char *path, const char *name, void *value, size_t si { #if defined(HAVE_GETXATTR) return getxattr(path, name, value, size); +#elif defined(HAVE_EXTATTR_GET_FILE) + char *s; + int attrnamespace = (strncmp(name, "system", 6) == 0) ? + EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER; + const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1; + + return extattr_get_file(path, attrnamespace, attrname, value, size); #elif defined(HAVE_ATTR_GET) int retval, flags = 0; int valuelength = (int)size; - char *attrname = strchr(name,'.') +1; + char *attrname = strchr(name,'.') + 1; if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT; @@ -1393,10 +1400,17 @@ ssize_t sys_lgetxattr (const char *path, const char *name, void *value, size_t s { #if defined(HAVE_LGETXATTR) return lgetxattr(path, name, value, size); +#elif defined(HAVE_EXTATTR_GET_LINK) + char *s; + int attrnamespace = (strncmp(name, "system", 6) == 0) ? + EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER; + const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1; + + return extattr_get_link(path, attrnamespace, attrname, value, size); #elif defined(HAVE_ATTR_GET) int retval, flags = ATTR_DONTFOLLOW; int valuelength = (int)size; - char *attrname = strchr(name,'.') +1; + char *attrname = strchr(name,'.') + 1; if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT; @@ -1413,10 +1427,17 @@ ssize_t sys_fgetxattr (int filedes, const char *name, void *value, size_t size) { #if defined(HAVE_FGETXATTR) return fgetxattr(filedes, name, value, size); +#elif defined(HAVE_EXTATTR_GET_FD) + char *s; + int attrnamespace = (strncmp(name, "system", 6) == 0) ? + EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER; + const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1; + + return extattr_get_fd(filedes, attrnamespace, attrname, value, size); #elif defined(HAVE_ATTR_GETF) int retval, flags = 0; int valuelength = (int)size; - char *attrname = strchr(name,'.') +1; + char *attrname = strchr(name,'.') + 1; if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT; @@ -1429,6 +1450,99 @@ ssize_t sys_fgetxattr (int filedes, const char *name, void *value, size_t size) #endif } +#if defined(HAVE_EXTATTR_LIST_FILE) + +#define EXTATTR_PREFIX(s) (s), (sizeof((s))-1) + +static struct { + int space; + const char *name; + size_t len; +} +extattr[] = { + { EXTATTR_NAMESPACE_SYSTEM, EXTATTR_PREFIX("system.") }, + { EXTATTR_NAMESPACE_USER, EXTATTR_PREFIX("user.") }, +}; + +typedef union { + const char *path; + int filedes; +} extattr_arg; + +static ssize_t bsd_attr_list (int type, extattr_arg arg, char *list, size_t size) +{ + ssize_t list_size, total_size = 0; + int i, t, len; + char *buf; + /* Iterate through extattr(2) namespaces */ + for(t = 0; t < (sizeof(extattr)/sizeof(extattr[0])); t++) { + switch(type) { +#if defined(HAVE_EXTATTR_LIST_FILE) + case 0: + list_size = extattr_list_file(arg.path, extattr[t].space, list, size); + break; +#endif +#if defined(HAVE_EXTATTR_LIST_LINK) + case 1: + list_size = extattr_list_link(arg.path, extattr[t].space, list, size); + break; +#endif +#if defined(HAVE_EXTATTR_LIST_FD) + case 2: + list_size = extattr_list_fd(arg.filedes, extattr[t].space, list, size); + break; +#endif + default: + errno = ENOSYS; + return -1; + } + /* Some error happend. Errno should be set by the previous call */ + if(list_size < 0) + return -1; + /* No attributes */ + if(list_size == 0) + continue; + /* XXX: Call with an empty buffer may be used to calculate + necessary buffer size. Unfortunately, we can't say, how + many attributes were returned, so here is the potential + problem with the emulation. + */ + if(list == NULL) { + /* Take the worse case of one char attribute names - + two bytes per name plus one more for sanity. + */ + total_size += list_size + (list_size/2 + 1)*extattr[t].len; + continue; + } + /* Count necessary offset to fit namespace prefixes */ + len = 0; + for(i = 0; i < list_size; i += list[i] + 1) + len += extattr[t].len; + + total_size += list_size + len; + /* Buffer is too small to fit the results */ + if(total_size > size) { + errno = ERANGE; + return -1; + } + /* Shift the results back, so we can prepend prefixes */ + buf = memmove(list + len, list, list_size); + + for(i = 0; i < list_size; i += len + 1) { + len = buf[i]; + strncpy(list, extattr[t].name, extattr[t].len + 1); + list += extattr[t].len; + strncpy(list, buf + i + 1, len); + list[len] = '\0'; + list += len + 1; + } + size -= total_size; + } + return total_size; +} + +#endif + #if defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H) static char attr_buffer[ATTR_MAX_VALUELEN]; @@ -1501,6 +1615,10 @@ ssize_t sys_listxattr (const char *path, char *list, size_t size) { #if defined(HAVE_LISTXATTR) return listxattr(path, list, size); +#elif defined(HAVE_EXTATTR_LIST_FILE) + extattr_arg arg; + arg.path = path; + return bsd_attr_list(0, arg, list, size); #elif defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H) return irix_attr_list(path, 0, list, size, 0); #else @@ -1513,6 +1631,10 @@ ssize_t sys_llistxattr (const char *path, char *list, size_t size) { #if defined(HAVE_LLISTXATTR) return llistxattr(path, list, size); +#elif defined(HAVE_EXTATTR_LIST_LINK) + extattr_arg arg; + arg.path = path; + return bsd_attr_list(1, arg, list, size); #elif defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H) return irix_attr_list(path, 0, list, size, ATTR_DONTFOLLOW); #else @@ -1525,6 +1647,10 @@ ssize_t sys_flistxattr (int filedes, char *list, size_t size) { #if defined(HAVE_FLISTXATTR) return flistxattr(filedes, list, size); +#elif defined(HAVE_EXTATTR_LIST_FD) + extattr_arg arg; + arg.filedes = filedes; + return bsd_attr_list(2, arg, list, size); #elif defined(HAVE_ATTR_LISTF) return irix_attr_list(NULL, filedes, list, size, 0); #else @@ -1537,9 +1663,16 @@ int sys_removexattr (const char *path, const char *name) { #if defined(HAVE_REMOVEXATTR) return removexattr(path, name); +#elif defined(HAVE_EXTATTR_DELETE_FILE) + char *s; + int attrnamespace = (strncmp(name, "system", 6) == 0) ? + EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER; + const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1; + + return extattr_delete_file(path, attrnamespace, attrname); #elif defined(HAVE_ATTR_REMOVE) int flags = 0; - char *attrname = strchr(name,'.') +1; + char *attrname = strchr(name,'.') + 1; if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT; @@ -1554,9 +1687,16 @@ int sys_lremovexattr (const char *path, const char *name) { #if defined(HAVE_LREMOVEXATTR) return lremovexattr(path, name); +#elif defined(HAVE_EXTATTR_DELETE_LINK) + char *s; + int attrnamespace = (strncmp(name, "system", 6) == 0) ? + EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER; + const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1; + + return extattr_delete_link(path, attrnamespace, attrname); #elif defined(HAVE_ATTR_REMOVE) int flags = ATTR_DONTFOLLOW; - char *attrname = strchr(name,'.') +1; + char *attrname = strchr(name,'.') + 1; if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT; @@ -1571,9 +1711,16 @@ int sys_fremovexattr (int filedes, const char *name) { #if defined(HAVE_FREMOVEXATTR) return fremovexattr(filedes, name); +#elif defined(HAVE_EXTATTR_DELETE_FD) + char *s; + int attrnamespace = (strncmp(name, "system", 6) == 0) ? + EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER; + const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1; + + return extattr_delete_fd(filedes, attrnamespace, attrname); #elif defined(HAVE_ATTR_REMOVEF) int flags = 0; - char *attrname = strchr(name,'.') +1; + char *attrname = strchr(name,'.') + 1; if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT; @@ -1593,9 +1740,18 @@ int sys_setxattr (const char *path, const char *name, const void *value, size_t { #if defined(HAVE_SETXATTR) return setxattr(path, name, value, size, flags); +#elif defined(HAVE_EXTATTR_SET_FILE) + char *s; + int retval = 0; + int attrnamespace = (strncmp(name, "system", 6) == 0) ? + EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER; + const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1; + + retval = extattr_set_file(path, attrnamespace, attrname, value, size); + return (retval < 0) ? -1 : 0; #elif defined(HAVE_ATTR_SET) int myflags = 0; - char *attrname = strchr(name,'.') +1; + char *attrname = strchr(name,'.') + 1; if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT; if (flags & XATTR_CREATE) myflags |= ATTR_CREATE; @@ -1612,9 +1768,18 @@ int sys_lsetxattr (const char *path, const char *name, const void *value, size_t { #if defined(HAVE_LSETXATTR) return lsetxattr(path, name, value, size, flags); +#elif defined(HAVE_EXTATTR_SET_LINK) + char *s; + int retval = 0; + int attrnamespace = (strncmp(name, "system", 6) == 0) ? + EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER; + const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1; + + retval = extattr_set_link(path, attrnamespace, attrname, value, size); + return (retval < 0) ? -1 : 0; #elif defined(HAVE_ATTR_SET) int myflags = ATTR_DONTFOLLOW; - char *attrname = strchr(name,'.') +1; + char *attrname = strchr(name,'.') + 1; if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT; if (flags & XATTR_CREATE) myflags |= ATTR_CREATE; @@ -1631,9 +1796,18 @@ int sys_fsetxattr (int filedes, const char *name, const void *value, size_t size { #if defined(HAVE_FSETXATTR) return fsetxattr(filedes, name, value, size, flags); +#elif defined(HAVE_EXTATTR_SET_FD) + char *s; + int retval = 0; + int attrnamespace = (strncmp(name, "system", 6) == 0) ? + EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER; + const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1; + + retval = extattr_set_fd(filedes, attrnamespace, attrname, value, size); + return (retval < 0) ? -1 : 0; #elif defined(HAVE_ATTR_SETF) int myflags = 0; - char *attrname = strchr(name,'.') +1; + char *attrname = strchr(name,'.') + 1; if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT; if (flags & XATTR_CREATE) myflags |= ATTR_CREATE; |