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before:
this_module = 'posix.sys.stat'
global_table = '_G'
M = require(this_module)
specify posix.sys.stat:
- context when required:
- it does not touch the global table:
expect(show_apis {added_to=global_table, by=this_module}).
to_equal {}
- before:
posix = require 'posix'
EPOCH = require 'posix.time'.time()
RWXALL = bor(M.S_IRWXU, M.S_IRWXG, M.S_IRWXO)
dir = posix.mkdtemp(template)
posix.chown(dir, posix.geteuid(), posix.getegid())
posix.mkdir(dir .. "/subdir")
posix.mkdir(dir .. "/subdir/deeper")
posix.link("subdir", dir .. "/soft", true)
touch(dir .. "/file")
posix.link(dir .. "/file", dir .. "/hard")
posix.link("no such destination", dir .. "/dangling", true)
posix.mkfifo(dir .. "/fifo")
- after:
rmtmp(dir)
- describe chmod:
- before:
chmod, lstat = M.chmod, M.lstat
chmod(dir .. "/file", bor(M.S_IRWXU, M.S_IRGRP, M.S_IXGRP))
- context with bad arguments: |
badargs.diagnose(chmod, "(string, int)")
examples {
["it diagnoses non-existent files"] = function()
expect(Emsg(chmod(dir .. "/not existing file", M.S_IRWXU))).
to_contain "No such file or directory"
end
}
- it sets file mode:
mode = bor(M.S_IRUSR, M.S_IWUSR, M.S_IXGRP, M.S_IROTH)
chmod(dir .. "/file", mode)
expect(band(lstat(dir .. "/file").st_mode, RWXALL)).to_be(mode)
- describe lstat:
- before:
getegid, geteuid = posix.getegid, posix.geteuid
lstat = M.lstat
- context with bad arguments:
badargs.diagnose(lstat, "(string)")
- it returns a PosixStat:
expect(prototype(lstat(dir .. "/file"))).to_be "PosixStat"
- it fetches the device id:
dev = lstat(dir .. "/file").st_dev
expect(type(dev)).to_be "number"
expect(dev >= 0).to_be(true)
expect(dev).to_be(lstat(dir).st_dev)
- it fetches the file inode:
ino = lstat(dir .. "/file").st_ino
expect(type(ino)).to_be "number"
expect(ino >= 0).to_be(true)
expect(ino).to_be(lstat(dir .. "/hard").st_ino)
expect(ino).not_to_be(lstat(dir .. "/soft").st_ino)
- context with file mode:
- it fetches the file access mode:
mode = lstat(dir).st_mode
expect(type(mode)).to_be "number"
expect(band(mode, M.S_IRWXU)).to_be(M.S_IRWXU)
- it recognises directories:
expect(M.S_ISBLK(lstat(dir).st_mode)).to_be(0)
expect(M.S_ISCHR(lstat(dir).st_mode)).to_be(0)
expect(M.S_ISDIR(lstat(dir).st_mode)).not_to_be(0)
expect(M.S_ISFIFO(lstat(dir).st_mode)).to_be(0)
expect(M.S_ISREG(lstat(dir).st_mode)).to_be(0)
expect(M.S_ISLNK(lstat(dir).st_mode)).to_be(0)
expect(M.S_ISSOCK(lstat(dir).st_mode)).to_be(0)
- it recognises fifos:
expect(M.S_ISBLK(lstat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISCHR(lstat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISDIR(lstat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISFIFO(lstat(dir .. "/fifo").st_mode)).not_to_be(0)
expect(M.S_ISREG(lstat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISLNK(lstat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISSOCK(lstat(dir .. "/fifo").st_mode)).to_be(0)
- it recognises regular files:
expect(M.S_ISBLK(lstat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISCHR(lstat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISDIR(lstat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISFIFO(lstat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISREG(lstat(dir .. "/file").st_mode)).not_to_be(0)
expect(M.S_ISLNK(lstat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISSOCK(lstat(dir .. "/file").st_mode)).to_be(0)
- it recognises soft links:
expect(M.S_ISBLK(lstat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISCHR(lstat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISDIR(lstat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISFIFO(lstat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISREG(lstat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISLNK(lstat(dir .. "/soft").st_mode)).not_to_be(0)
expect(M.S_ISSOCK(lstat(dir .. "/soft").st_mode)).to_be(0)
- it fetches the number of links:
expect(lstat(dir .. "/file").st_nlink).to_be(2)
expect(lstat(dir .. "/soft").st_nlink).to_be(1)
expect(lstat(dir .. "/hard").st_nlink).
to_be(lstat(dir .. "/file").st_nlink)
expect(lstat(dir .. "/subdir").st_nlink).to_be(3)
- it fetches the owner id:
expect(lstat(dir .. "/file").st_uid).to_be(geteuid())
expect(lstat(dir .. "/subdir").st_uid).to_be(geteuid())
- it fetches the owner group id:
expect(lstat(dir .. "/file").st_gid).to_be(getegid())
expect(lstat(dir .. "/subdir").st_gid).to_be(getegid())
- it fetches the device special file id:
pending "mknod not yet bound"
- it fetches the file size:
# skip directory size, which is system dependent
expect(lstat(dir .. "/file").st_size).to_be(0)
expect(lstat(dir .. "/soft").st_size).to_be(string.len("subdir"))
expect(lstat(dir .. "/hard").st_size).
to_be(lstat(dir .. "/file").st_size)
- it fetches the file access time:
expect(lstat(dir .. "/file").st_atime).
to_be_within_n_of {value=EPOCH, delta=1}
- it fetches the file modification time:
expect(lstat(dir .. "/file").st_mtime).
to_be_within_n_of {value=EPOCH, delta=1}
- it fetches the file change time:
expect(lstat(dir .. "/file").st_ctime).
to_be_within_n_of {value=EPOCH, delta=1}
- it fetches the device block size:
blksize = lstat(dir .. "/file").st_blksize
expect(type(blksize)).to_be "number"
expect(blksize > 0).to_be(true)
expect(blksize).to_be(lstat(dir .. "/hard").st_blksize)
- it fetches the number of blocks:
blocks = lstat(dir .. "/file").st_blocks
expect(type(blocks)).to_be "number"
expect(blocks >= 0).to_be(true)
expect(blocks).to_be(lstat(dir .. "/hard").st_blocks)
- describe fstat:
- before:
fc = require "posix.fcntl"
fd_dir = fc.open(dir, fc.O_RDONLY)
fd_file = fc.open(dir .. "/file", fc.O_RDONLY)
fd_hard = fc.open(dir .. "/hard", fc.O_RDONLY)
fd_fifo = fc.open(dir .. "/fifo", bor(fc.O_RDONLY, fc.O_NONBLOCK))
fd_subdir = fc.open(dir .. "/subdir", fc.O_RDONLY)
getegid, geteuid = posix.getegid, posix.geteuid
fstat = M.fstat
- context with bad arguments:
badargs.diagnose(fstat, "(int)")
- it returns a PosixStat:
expect(prototype(fstat(fd_file))).to_be "PosixStat"
- it fetches the device id:
dev = fstat(fd_file).st_dev
expect(type(dev)).to_be "number"
expect(dev >= 0).to_be(true)
expect(dev).to_be(fstat(fd_dir).st_dev)
- it fetches the file inode:
ino = fstat(fd_file).st_ino
expect(type(ino)).to_be "number"
expect(ino >= 0).to_be(true)
expect(ino).to_be(fstat(fd_hard).st_ino)
- context with file mode:
- it fetches the file access mode:
mode = fstat(fd_dir).st_mode
expect(type(mode)).to_be "number"
expect(band(mode, M.S_IRWXU)).to_be(M.S_IRWXU)
- it recognises directories:
expect(M.S_ISBLK(fstat(fd_dir).st_mode)).to_be(0)
expect(M.S_ISCHR(fstat(fd_dir).st_mode)).to_be(0)
expect(M.S_ISDIR(fstat(fd_dir).st_mode)).not_to_be(0)
expect(M.S_ISFIFO(fstat(fd_dir).st_mode)).to_be(0)
expect(M.S_ISREG(fstat(fd_dir).st_mode)).to_be(0)
expect(M.S_ISLNK(fstat(fd_dir).st_mode)).to_be(0)
expect(M.S_ISSOCK(fstat(fd_dir).st_mode)).to_be(0)
- it recognises fifos:
expect(M.S_ISBLK(fstat(fd_fifo).st_mode)).to_be(0)
expect(M.S_ISCHR(fstat(fd_fifo).st_mode)).to_be(0)
expect(M.S_ISDIR(fstat(fd_fifo).st_mode)).to_be(0)
expect(M.S_ISFIFO(fstat(fd_fifo).st_mode)).not_to_be(0)
expect(M.S_ISREG(fstat(fd_fifo).st_mode)).to_be(0)
expect(M.S_ISLNK(fstat(fd_fifo).st_mode)).to_be(0)
expect(M.S_ISSOCK(fstat(fd_fifo).st_mode)).to_be(0)
- it recognises regular files:
expect(M.S_ISBLK(fstat(fd_file).st_mode)).to_be(0)
expect(M.S_ISCHR(fstat(fd_file).st_mode)).to_be(0)
expect(M.S_ISDIR(fstat(fd_file).st_mode)).to_be(0)
expect(M.S_ISFIFO(fstat(fd_file).st_mode)).to_be(0)
expect(M.S_ISREG(fstat(fd_file).st_mode)).not_to_be(0)
expect(M.S_ISLNK(fstat(fd_file).st_mode)).to_be(0)
expect(M.S_ISSOCK(fstat(fd_file).st_mode)).to_be(0)
- it fetches the number of links:
expect(fstat(fd_file).st_nlink).to_be(2)
expect(fstat(fd_hard).st_nlink).
to_be(fstat(fd_file).st_nlink)
expect(fstat(fd_subdir).st_nlink).to_be(3)
- it fetches the owner id:
expect(fstat(fd_file).st_uid).to_be(geteuid())
expect(fstat(fd_subdir).st_uid).to_be(geteuid())
- it fetches the owner group id:
expect(fstat(fd_file).st_gid).to_be(getegid())
expect(fstat(fd_subdir).st_gid).to_be(getegid())
- it fetches the device special file id:
pending "mknod not yet bound"
- it fetches the file size:
# skip directory size, which is system dependent
expect(fstat(fd_file).st_size).to_be(0)
expect(fstat(fd_hard).st_size).to_be(fstat(fd_file).st_size)
- it fetches the file access time:
expect(fstat(fd_file).st_atime).
to_be_within_n_of {value=EPOCH, delta=1}
- it fetches the file modification time:
expect(fstat(fd_file).st_mtime).
to_be_within_n_of {value=EPOCH, delta=1}
- it fetches the file change time:
expect(fstat(fd_file).st_ctime).
to_be_within_n_of {value=EPOCH, delta=1}
- it fetches the device block size:
blksize = fstat(fd_file).st_blksize
expect(type(blksize)).to_be "number"
expect(blksize > 0).to_be(true)
expect(blksize).to_be(fstat(fd_hard).st_blksize)
- it fetches the number of blocks:
blocks = fstat(fd_file).st_blocks
expect(type(blocks)).to_be "number"
expect(blocks >= 0).to_be(true)
expect(blocks).to_be(fstat(fd_hard).st_blocks)
- describe mkdir:
- before:
dir = posix.mkdtemp(template)
lstat, mkdir = M.lstat, M.mkdir
- after:
rmtmp(dir)
- context with bad arguments:
badargs.diagnose(mkdir, "(string, ?int)")
- it creates the named directory:
expect(Emsg(mkdir(dir .. "/subdir"))).not_to_contain "exists"
mode = lstat(dir .. "/subdir").st_mode
expect(M.S_ISDIR(mode)).not_to_be(0)
- it sets the new directory permissions:
mkdir(dir .. "/subdir", M.S_IRWXU)
mode = lstat(dir .. "/subdir").st_mode
expect(band(mode, RWXALL)).to_be(M.S_IRWXU)
- it diagnoses already existing directory:
expect(Emsg(mkdir(dir, RWXALL))).to_contain "exists"
- describe mkfifo:
- before:
dir = posix.mkdtemp(template)
lstat, mkfifo = M.lstat, M.mkfifo
- after:
rmtmp(dir)
- context with bad arguments:
badargs.diagnose(mkfifo, "(string, ?int)")
- it creates the named fifo:
expect(Emsg(mkfifo(dir .. "/fifo"))).not_to_contain "exists"
mode = lstat(dir .. "/fifo").st_mode
expect(M.S_ISFIFO(mode)).not_to_be(0)
- it sets the new fifo permissions:
mkfifo(dir .. "/fifo", M.S_IRWXU)
mode = lstat(dir .. "/fifo").st_mode
expect(band(mode, RWXALL)).to_be(M.S_IRWXU)
- it diagnoses already existing fifo:
expect(Emsg(mkfifo(dir, RWXALL))).to_contain "exists"
- describe stat:
- before:
getegid, geteuid = posix.getegid, posix.geteuid
stat = M.stat
- context with bad arguments:
badargs.diagnose(stat, "(string)")
- it returns a PosixStat:
expect(prototype(stat(dir .. "/file"))).to_be "PosixStat"
- it fetches the device id:
dev = stat(dir .. "/file").st_dev
expect(type(dev)).to_be "number"
expect(dev >= 0).to_be(true)
expect(dev).to_be(stat(dir).st_dev)
- it fetches the file inode:
ino = stat(dir .. "/file").st_ino
expect(type(ino)).to_be "number"
expect(ino >= 0).to_be(true)
expect(ino).to_be(stat(dir .. "/hard").st_ino)
expect(ino).not_to_be(stat(dir .. "/soft").st_ino)
- context with file mode:
- it fetches the file access mode:
mode = stat(dir).st_mode
expect(type(mode)).to_be "number"
expect(band(mode, M.S_IRWXU)).to_be(M.S_IRWXU)
- it recognises directories:
expect(M.S_ISBLK(stat(dir).st_mode)).to_be(0)
expect(M.S_ISCHR(stat(dir).st_mode)).to_be(0)
expect(M.S_ISDIR(stat(dir).st_mode)).not_to_be(0)
expect(M.S_ISFIFO(stat(dir).st_mode)).to_be(0)
expect(M.S_ISREG(stat(dir).st_mode)).to_be(0)
expect(M.S_ISLNK(stat(dir).st_mode)).to_be(0)
expect(M.S_ISSOCK(stat(dir).st_mode)).to_be(0)
- it recognises fifos:
expect(M.S_ISBLK(stat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISCHR(stat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISDIR(stat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISFIFO(stat(dir .. "/fifo").st_mode)).not_to_be(0)
expect(M.S_ISREG(stat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISLNK(stat(dir .. "/fifo").st_mode)).to_be(0)
expect(M.S_ISSOCK(stat(dir .. "/fifo").st_mode)).to_be(0)
- it recognises regular files:
expect(M.S_ISBLK(stat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISCHR(stat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISDIR(stat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISFIFO(stat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISREG(stat(dir .. "/file").st_mode)).not_to_be(0)
expect(M.S_ISLNK(stat(dir .. "/file").st_mode)).to_be(0)
expect(M.S_ISSOCK(stat(dir .. "/file").st_mode)).to_be(0)
- it recognises soft links:
expect(M.S_ISBLK(stat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISCHR(stat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISDIR(stat(dir .. "/soft").st_mode)).not_to_be(0)
expect(M.S_ISFIFO(stat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISREG(stat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISLNK(stat(dir .. "/soft").st_mode)).to_be(0)
expect(M.S_ISSOCK(stat(dir .. "/soft").st_mode)).to_be(0)
- it fetches the number of links:
expect(stat(dir .. "/file").st_nlink).to_be(2)
expect(stat(dir .. "/soft").st_nlink).
to_be(stat(dir .. "/subdir").st_nlink)
expect(stat(dir .. "/hard").st_nlink).
to_be(stat(dir .. "/file").st_nlink)
expect(stat(dir .. "/subdir").st_nlink).to_be(3)
- it fetches the owner id:
expect(stat(dir .. "/file").st_uid).to_be(geteuid())
expect(stat(dir .. "/subdir").st_uid).to_be(geteuid())
- it fetches the owner group id:
expect(stat(dir .. "/file").st_gid).to_be(getegid())
expect(stat(dir .. "/subdir").st_gid).to_be(getegid())
- it fetches the device special file id:
pending "mknod not yet bound"
- it fetches the file size:
# skip directory size, which is system dependent
expect(stat(dir .. "/file").st_size).to_be(0)
expect(stat(dir .. "/soft").st_size).not_to_be(string.len("subdir"))
expect(stat(dir .. "/hard").st_size).
to_be(stat(dir .. "/file").st_size)
- it fetches the file access time:
expect(stat(dir .. "/file").st_atime).
to_be_within_n_of {value=EPOCH, delta=1}
- it fetches the file modification time:
expect(stat(dir .. "/file").st_mtime).
to_be_within_n_of {value=EPOCH, delta=1}
- it fetches the file change time:
expect(stat(dir .. "/file").st_ctime).
to_be_within_n_of {value=EPOCH, delta=1}
- it fetches the device block size:
blksize = stat(dir .. "/file").st_blksize
expect(type(blksize)).to_be "number"
expect(blksize > 0).to_be(true)
expect(blksize).to_be(stat(dir .. "/hard").st_blksize)
- it fetches the number of blocks:
blocks = stat(dir .. "/file").st_blocks
expect(type(blocks)).to_be "number"
expect(blocks >= 0).to_be(true)
expect(blocks).to_be(stat(dir .. "/hard").st_blocks)
- describe umask:
- before:
lstat, umask = M.lstat, M.umask
newmask = band(M.S_IWGRP, M.S_IRWXO)
origmask = umask(newmask)
- after:
umask(origmask)
- context with bad arguments:
badargs.diagnose(umask, "(int)")
- it returns current umask:
expect(umask(0)).to_be(newmask)
expect(umask(newmask)).to_be(0)
- it controls the mode of newly created files:
all = bor(M.S_IRWXU, M.S_IRWXG, M.S_IRWXO)
xxx, mask = dir .. "/xxx", bor(M.S_IRWXO, M.S_IWGRP, M.S_IXGRP)
umask(mask)
touch(xxx)
expect(band(lstat(xxx).st_mode, all)).to_be(bor(M.S_IRUSR, M.S_IWUSR, M.S_IRGRP))
os.remove(xxx)
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