-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 04/26/2014 12:17 PM, Dave Hylands wrote: >> The basic user/group/other permissions are always set to the >> mode argument to open() or mkdir(), and-not the umask. > The permissions used by open are affected by umask. If you use > open/creat to create a file with 0777 permisions and umask is 022 > then you will get a 0755 file. See: > http://linux.die.net/man/2/open and search for umask
I am aware of this. I see now that "the mode argument and-not the umask" reads like "the umask is irrelevant", but what I actually meant was "the permissions are set to mode & ~umask". >> (It now occurs to me that if the download manager moves files to >> a different directory after it finishes downloading them, we need >> to reset their ACL and group ownership as well as applying the >> umask. > > The umask would have already been applied when the file was > created. Well, the entire point of bug 961080 is that files are being created mode (0600 & ~umask) rather than (0666 & ~umask) as is more typical, and that it's not safe to just switch to open(,, 0666), we have to chmod it later. > If you copied the file, then it would get assigned the correct > group. Being the owner of a directory but not a member of the group > seems unusual. Consider a directory like this (numeric mode 3777): drwxrwsrwt 25 root root 4096 Apr 20 12:54 test.d Anyone can create files in this directory, and the group of files so created is forced to group 'root', *even if* they are not themselves members of that group. Similar, and rather more plausibly relevant to downloads, scenarios can be constructed with directory default ACLs. zw -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Icedove - http://www.enigmail.net/ iQIcBAEBCAAGBQJTXATaAAoJEJH8wytnaapkhqEP/2/IDDB0cmowE65tg1helk8W j3PC8j1iOPefT96n6HYZtj/o1jcakBbmO3QKSzE8BsHEV39N9R2qJwwupmiUdVFP 9Al9gSaYWmX0Cc9SPtIyrVdAn54WwudaF7CTkMIKpzywd793YfHE3nQW4PJNf6Hb c7gNLJytHA2+2hCamkqRfdyTV4mO1LaUrk8N1c/GcQNkkRJDiaw042LB3NOWFwJw dodMq/ByvjwJUi9ltJheGfwT+pMG8egK8g/zDes66n16XAwpXeqbiZlvwy1oDU0I pVHPfW6pFZtST2nT5Fj429WWCYyXC+kBN5yAhPwKQdWQeHJpok3c81Hg27Wy1Kkf YqHJ73Zkj4WWrMUQUVpmAxN+eq40OtNrh3+fEtMIuGewVCwuDxtGZWhcvsmTQUuH gA026kfY5euiILq2lda2Gw3dp8ZGkXhXuZWv3aoB4954TY/8SK6IUkt/7vhke6Tn ZKnFNxWIi+d3dWLesZgIOtAKczdPIhfdyURCeVEx+XHdZEIJllXIqRkp01cFNrUG rY/omKFU7PHM2qGP7HOseGO/aXsy3MqOb/YWTeq8MeEVcHRouge373RCfBRl9MtP o8cYh4eKgIHVfZjzVJzq1S/ckZy8LciiOtTFaHItz1Lh6Sj+KM3WStAv1IXEnpHQ 4pc5aNQZLSrXDFWR7h7J =s/jl -----END PGP SIGNATURE----- _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
