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cd354f1ae7
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/*
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* linux/fs/xattr_acl.c
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*
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* Almost all from linux/fs/ext2/acl.c:
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* Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/fs.h>
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#include <linux/posix_acl_xattr.h>
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/*
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* Convert from extended attribute to in-memory representation.
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*/
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struct posix_acl *
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posix_acl_from_xattr(const void *value, size_t size)
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{
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posix_acl_xattr_header *header = (posix_acl_xattr_header *)value;
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posix_acl_xattr_entry *entry = (posix_acl_xattr_entry *)(header+1), *end;
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int count;
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struct posix_acl *acl;
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struct posix_acl_entry *acl_e;
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if (!value)
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return NULL;
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if (size < sizeof(posix_acl_xattr_header))
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return ERR_PTR(-EINVAL);
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if (header->a_version != cpu_to_le32(POSIX_ACL_XATTR_VERSION))
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return ERR_PTR(-EOPNOTSUPP);
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count = posix_acl_xattr_count(size);
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if (count < 0)
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return ERR_PTR(-EINVAL);
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if (count == 0)
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return NULL;
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acl = posix_acl_alloc(count, GFP_KERNEL);
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if (!acl)
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return ERR_PTR(-ENOMEM);
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acl_e = acl->a_entries;
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for (end = entry + count; entry != end; acl_e++, entry++) {
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acl_e->e_tag = le16_to_cpu(entry->e_tag);
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acl_e->e_perm = le16_to_cpu(entry->e_perm);
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switch(acl_e->e_tag) {
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case ACL_USER_OBJ:
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case ACL_GROUP_OBJ:
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case ACL_MASK:
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case ACL_OTHER:
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acl_e->e_id = ACL_UNDEFINED_ID;
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break;
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case ACL_USER:
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case ACL_GROUP:
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acl_e->e_id = le32_to_cpu(entry->e_id);
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break;
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default:
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goto fail;
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}
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}
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return acl;
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fail:
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posix_acl_release(acl);
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return ERR_PTR(-EINVAL);
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}
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EXPORT_SYMBOL (posix_acl_from_xattr);
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/*
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* Convert from in-memory to extended attribute representation.
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*/
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int
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posix_acl_to_xattr(const struct posix_acl *acl, void *buffer, size_t size)
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{
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posix_acl_xattr_header *ext_acl = (posix_acl_xattr_header *)buffer;
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posix_acl_xattr_entry *ext_entry = ext_acl->a_entries;
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int real_size, n;
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real_size = posix_acl_xattr_size(acl->a_count);
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if (!buffer)
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return real_size;
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if (real_size > size)
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return -ERANGE;
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ext_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION);
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for (n=0; n < acl->a_count; n++, ext_entry++) {
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ext_entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag);
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ext_entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
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ext_entry->e_id = cpu_to_le32(acl->a_entries[n].e_id);
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}
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return real_size;
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}
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EXPORT_SYMBOL (posix_acl_to_xattr);
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