diff options
Diffstat (limited to 'libarchive/archive_write_disk_acl.c')
| -rw-r--r-- | libarchive/archive_write_disk_acl.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/libarchive/archive_write_disk_acl.c b/libarchive/archive_write_disk_acl.c new file mode 100644 index 0000000..9797203 --- /dev/null +++ b/libarchive/archive_write_disk_acl.c @@ -0,0 +1,249 @@ +/*- + * Copyright (c) 2003-2010 Tim Kientzle + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer + * in this position and unchanged. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "archive_platform.h" +__FBSDID("$FreeBSD: head/lib/libarchive/archive_write_disk.c 201159 2009-12-29 05:35:40Z kientzle $"); + +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_ACL_H +#define _ACL_PRIVATE /* For debugging */ +#include <sys/acl.h> +#endif +#ifdef HAVE_ERRNO_H +#include <errno.h> +#endif + +#include "archive.h" +#include "archive_entry.h" +#include "archive_acl_private.h" +#include "archive_write_disk_private.h" + +#if !defined(HAVE_POSIX_ACL) || !defined(ACL_TYPE_NFS4) +/* Default empty function body to satisfy mainline code. */ +int +archive_write_disk_set_acls(struct archive *a, int fd, const char *name, + struct archive_acl *abstract_acl) +{ + (void)a; /* UNUSED */ + (void)fd; /* UNUSED */ + (void)name; /* UNUSED */ + (void)abstract_acl; /* UNUSED */ + return (ARCHIVE_OK); +} + +#else + +static int set_acl(struct archive *, int fd, const char *, + struct archive_acl *, + acl_type_t, int archive_entry_acl_type, const char *tn); + +/* + * XXX TODO: What about ACL types other than ACCESS and DEFAULT? + */ +int +archive_write_disk_set_acls(struct archive *a, int fd, const char *name, + struct archive_acl *abstract_acl) +{ + int ret; + + if (archive_acl_count(abstract_acl, ARCHIVE_ENTRY_ACL_TYPE_POSIX1E) > 0) { + ret = set_acl(a, fd, name, abstract_acl, ACL_TYPE_ACCESS, + ARCHIVE_ENTRY_ACL_TYPE_ACCESS, "access"); + if (ret != ARCHIVE_OK) + return (ret); + ret = set_acl(a, fd, name, abstract_acl, ACL_TYPE_DEFAULT, + ARCHIVE_ENTRY_ACL_TYPE_DEFAULT, "default"); + return (ret); + } else if (archive_acl_count(abstract_acl, ARCHIVE_ENTRY_ACL_TYPE_NFS4) > 0) { + ret = set_acl(a, fd, name, abstract_acl, ACL_TYPE_NFS4, + ARCHIVE_ENTRY_ACL_TYPE_NFS4, "nfs4"); + return (ret); + } else + return ARCHIVE_OK; +} + +static struct { + int archive_perm; + int platform_perm; +} acl_perm_map[] = { + {ARCHIVE_ENTRY_ACL_EXECUTE, ACL_EXECUTE}, + {ARCHIVE_ENTRY_ACL_WRITE, ACL_WRITE}, + {ARCHIVE_ENTRY_ACL_READ, ACL_READ}, + {ARCHIVE_ENTRY_ACL_READ_DATA, ACL_READ_DATA}, + {ARCHIVE_ENTRY_ACL_LIST_DIRECTORY, ACL_LIST_DIRECTORY}, + {ARCHIVE_ENTRY_ACL_WRITE_DATA, ACL_WRITE_DATA}, + {ARCHIVE_ENTRY_ACL_ADD_FILE, ACL_ADD_FILE}, + {ARCHIVE_ENTRY_ACL_APPEND_DATA, ACL_APPEND_DATA}, + {ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY, ACL_ADD_SUBDIRECTORY}, + {ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS, ACL_READ_NAMED_ATTRS}, + {ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS, ACL_WRITE_NAMED_ATTRS}, + {ARCHIVE_ENTRY_ACL_DELETE_CHILD, ACL_DELETE_CHILD}, + {ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES, ACL_READ_ATTRIBUTES}, + {ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES, ACL_WRITE_ATTRIBUTES}, + {ARCHIVE_ENTRY_ACL_DELETE, ACL_DELETE}, + {ARCHIVE_ENTRY_ACL_READ_ACL, ACL_READ_ACL}, + {ARCHIVE_ENTRY_ACL_WRITE_ACL, ACL_WRITE_ACL}, + {ARCHIVE_ENTRY_ACL_WRITE_OWNER, ACL_WRITE_OWNER}, + {ARCHIVE_ENTRY_ACL_SYNCHRONIZE, ACL_SYNCHRONIZE} +}; + +static struct { + int archive_inherit; + int platform_inherit; +} acl_inherit_map[] = { + {ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT, ACL_ENTRY_FILE_INHERIT}, + {ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT, ACL_ENTRY_DIRECTORY_INHERIT}, + {ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT, ACL_ENTRY_NO_PROPAGATE_INHERIT}, + {ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY, ACL_ENTRY_INHERIT_ONLY} +}; + +static int +set_acl(struct archive *a, int fd, const char *name, + struct archive_acl *abstract_acl, + acl_type_t acl_type, int ae_requested_type, const char *tname) +{ + acl_t acl; + acl_entry_t acl_entry; + acl_permset_t acl_permset; + acl_flagset_t acl_flagset; + int ret; + int ae_type, ae_permset, ae_tag, ae_id; + uid_t ae_uid; + gid_t ae_gid; + const char *ae_name; + int entries; + int i; + + ret = ARCHIVE_OK; + entries = archive_acl_reset(abstract_acl, ae_requested_type); + if (entries == 0) + return (ARCHIVE_OK); + acl = acl_init(entries); + while (archive_acl_next(a, abstract_acl, ae_requested_type, &ae_type, + &ae_permset, &ae_tag, &ae_id, &ae_name) == ARCHIVE_OK) { + acl_create_entry(&acl, &acl_entry); + + switch (ae_tag) { + case ARCHIVE_ENTRY_ACL_USER: + acl_set_tag_type(acl_entry, ACL_USER); + ae_uid = archive_write_disk_uid(a, ae_name, ae_id); + acl_set_qualifier(acl_entry, &ae_uid); + break; + case ARCHIVE_ENTRY_ACL_GROUP: + acl_set_tag_type(acl_entry, ACL_GROUP); + ae_gid = archive_write_disk_gid(a, ae_name, ae_id); + acl_set_qualifier(acl_entry, &ae_gid); + break; + case ARCHIVE_ENTRY_ACL_USER_OBJ: + acl_set_tag_type(acl_entry, ACL_USER_OBJ); + break; + case ARCHIVE_ENTRY_ACL_GROUP_OBJ: + acl_set_tag_type(acl_entry, ACL_GROUP_OBJ); + break; + case ARCHIVE_ENTRY_ACL_MASK: + acl_set_tag_type(acl_entry, ACL_MASK); + break; + case ARCHIVE_ENTRY_ACL_OTHER: + acl_set_tag_type(acl_entry, ACL_OTHER); + break; + case ARCHIVE_ENTRY_ACL_EVERYONE: + acl_set_tag_type(acl_entry, ACL_EVERYONE); + break; + default: + /* XXX */ + break; + } + + switch (ae_type) { + case ARCHIVE_ENTRY_ACL_TYPE_ALLOW: + acl_set_entry_type_np(acl_entry, ACL_ENTRY_TYPE_ALLOW); + break; + case ARCHIVE_ENTRY_ACL_TYPE_DENY: + acl_set_entry_type_np(acl_entry, ACL_ENTRY_TYPE_DENY); + break; + case ARCHIVE_ENTRY_ACL_TYPE_AUDIT: + acl_set_entry_type_np(acl_entry, ACL_ENTRY_TYPE_AUDIT); + break; + case ARCHIVE_ENTRY_ACL_TYPE_ALARM: + acl_set_entry_type_np(acl_entry, ACL_ENTRY_TYPE_ALARM); + break; + case ARCHIVE_ENTRY_ACL_TYPE_ACCESS: + case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT: + // These don't translate directly into the system ACL. + break; + default: + // XXX error handling here. + break; + } + + acl_get_permset(acl_entry, &acl_permset); + acl_clear_perms(acl_permset); + + for (i = 0; i < (int)(sizeof(acl_perm_map) / sizeof(acl_perm_map[0])); ++i) { + if (ae_permset & acl_perm_map[i].archive_perm) + acl_add_perm(acl_permset, + acl_perm_map[i].platform_perm); + } + + acl_get_flagset_np(acl_entry, &acl_flagset); + acl_clear_flags_np(acl_flagset); + for (i = 0; i < (int)(sizeof(acl_inherit_map) / sizeof(acl_inherit_map[0])); ++i) { + if (ae_permset & acl_inherit_map[i].archive_inherit) + acl_add_flag_np(acl_flagset, + acl_inherit_map[i].platform_inherit); + } + } + + /* Try restoring the ACL through 'fd' if we can. */ +#if HAVE_ACL_SET_FD + if (fd >= 0 && acl_type == ACL_TYPE_ACCESS && acl_set_fd(fd, acl) == 0) + ret = ARCHIVE_OK; + else +#else +#if HAVE_ACL_SET_FD_NP + if (fd >= 0 && acl_set_fd_np(fd, acl, acl_type) == 0) + ret = ARCHIVE_OK; + else +#endif +#endif +#if HAVE_ACL_SET_LINK_NP + if (acl_set_link_np(name, acl_type, acl) != 0) { + archive_set_error(a, errno, "Failed to set %s acl", tname); + ret = ARCHIVE_WARN; + } +#else + /* TODO: Skip this if 'name' is a symlink. */ + if (acl_set_file(name, acl_type, acl) != 0) { + archive_set_error(a, errno, "Failed to set %s acl", tname); + ret = ARCHIVE_WARN; + } +#endif + acl_free(acl); + return (ret); +} +#endif |