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authorMiklos Szeredi <mszeredi@suse.cz>2014-09-24 17:56:17 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2014-09-27 03:16:42 +0200
commitb928095b0a7cff7fb9fcf4c706348ceb8ab2c295 (patch)
tree3fb6e68aabf7f0fbb9a28be6423942311c67cee0 /fs/direct-io.c
parentLinux 3.17-rc6 (diff)
downloadlinux-b928095b0a7cff7fb9fcf4c706348ceb8ab2c295.tar.xz
linux-b928095b0a7cff7fb9fcf4c706348ceb8ab2c295.zip
shmem: fix nlink for rename overwrite directory
If overwriting an empty directory with rename, then need to drop the extra nlink. Test prog: #include <stdio.h> #include <fcntl.h> #include <err.h> #include <sys/stat.h> int main(void) { const char *test_dir1 = "test-dir1"; const char *test_dir2 = "test-dir2"; int res; int fd; struct stat statbuf; res = mkdir(test_dir1, 0777); if (res == -1) err(1, "mkdir(\"%s\")", test_dir1); res = mkdir(test_dir2, 0777); if (res == -1) err(1, "mkdir(\"%s\")", test_dir2); fd = open(test_dir2, O_RDONLY); if (fd == -1) err(1, "open(\"%s\")", test_dir2); res = rename(test_dir1, test_dir2); if (res == -1) err(1, "rename(\"%s\", \"%s\")", test_dir1, test_dir2); res = fstat(fd, &statbuf); if (res == -1) err(1, "fstat(%i)", fd); if (statbuf.st_nlink != 0) { fprintf(stderr, "nlink is %lu, should be 0\n", statbuf.st_nlink); return 1; } return 0; } Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/direct-io.c')
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