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Message-ID: <20080827134751.19980.21808.stgit@warthog.procyon.org.uk> Date: Wed, 27 Aug 2008 14:47:51 +0100 From: David Howells <dhowells@...hat.com> To: linux-kernel@...r.kernel.org Cc: linux-security-module@...r.kernel.org, David Howells <dhowells@...hat.com>, Serge Hallyn <serue@...ibm.com>, Stephen Tweedie <sct@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, adilger@....com, linux-ext4@...r.kernel.org Subject: [PATCH 25/59] CRED: Wrap task credential accesses in the Ext4 filesystem Wrap access to task credentials so that they can be separated more easily from the task_struct during the introduction of COW creds. Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id(). Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more sense to use RCU directly rather than a convenient wrapper; these will be addressed by later patches. Signed-off-by: David Howells <dhowells@...hat.com> Reviewed-by: James Morris <jmorris@...ei.org> Acked-by: Serge Hallyn <serue@...ibm.com> Cc: Stephen Tweedie <sct@...hat.com> Cc: Andrew Morton <akpm@...ux-foundation.org> Cc: adilger@....com Cc: linux-ext4@...r.kernel.org --- fs/ext4/balloc.c | 3 +-- fs/ext4/ialloc.c | 4 ++-- 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index e9fa960..448cd59 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -1618,7 +1618,7 @@ ext4_fsblk_t ext4_has_free_blocks(struct ext4_sb_info *sbi, free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter); if (!capable(CAP_SYS_RESOURCE) && - sbi->s_resuid != current->fsuid && + sbi->s_resuid != current_fsuid() && (sbi->s_resgid == 0 || !in_group_p(sbi->s_resgid))) root_blocks = ext4_r_blocks_count(sbi->s_es); #ifdef CONFIG_SMP @@ -1634,7 +1634,6 @@ ext4_fsblk_t ext4_has_free_blocks(struct ext4_sb_info *sbi, return nblocks; } - /** * ext4_should_retry_alloc() * @sb: super block diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index f344834..97ed523 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -782,7 +782,7 @@ got: spin_unlock(sb_bgl_lock(sbi, flex_group)); } - inode->i_uid = current->fsuid; + inode->i_uid = current_fsuid(); if (test_opt (sb, GRPID)) inode->i_gid = dir->i_gid; else if (dir->i_mode & S_ISGID) { @@ -790,7 +790,7 @@ got: if (S_ISDIR(mode)) mode |= S_ISGID; } else - inode->i_gid = current->fsgid; + inode->i_gid = current_fsgid(); inode->i_mode = mode; inode->i_ino = ino + group * EXT4_INODES_PER_GROUP(sb); -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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