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Kernel: Use symbolic constants for file modes

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This fixes a bug where the mode of a FIFO was reported as 001000 instead
of 0010000 (you see the difference? me nethier), and hopefully doesn't
introduce new bugs. I've left 0777 and similar in a few places, because
that is *more* readable than its symbolic version.
This commit is contained in:
Sergey Bugaev 2020-06-16 22:03:51 +03:00 • committed by Andreas Kling
parent fd985b1f48
commit e0d0d52455
5 changed files with 52 additions and 30 deletions
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38
Kernel/FileSystem/InodeMetadata.h
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@ -40,16 +40,16 @@ inline constexpr u32 encoded_device(unsigned major, unsigned minor)
return (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
}
inline bool is_directory(mode_t mode) { return (mode & 0170000) == 0040000; }
inline bool is_character_device(mode_t mode) { return (mode & 0170000) == 0020000; }
inline bool is_block_device(mode_t mode) { return (mode & 0170000) == 0060000; }
inline bool is_regular_file(mode_t mode) { return (mode & 0170000) == 0100000; }
inline bool is_fifo(mode_t mode) { return (mode & 0170000) == 0010000; }
inline bool is_symlink(mode_t mode) { return (mode & 0170000) == 0120000; }
inline bool is_socket(mode_t mode) { return (mode & 0170000) == 0140000; }
inline bool is_sticky(mode_t mode) { return mode & 01000; }
inline bool is_setuid(mode_t mode) { return mode & 04000; }
inline bool is_setgid(mode_t mode) { return mode & 02000; }
inline bool is_directory(mode_t mode) { return (mode & S_IFMT) == S_IFDIR; }
inline bool is_character_device(mode_t mode) { return (mode & S_IFMT) == S_IFCHR; }
inline bool is_block_device(mode_t mode) { return (mode & S_IFMT) == S_IFBLK; }
inline bool is_regular_file(mode_t mode) { return (mode & S_IFMT) == S_IFREG; }
inline bool is_fifo(mode_t mode) { return (mode & S_IFMT) == S_IFIFO; }
inline bool is_symlink(mode_t mode) { return (mode & S_IFMT) == S_IFLNK; }
inline bool is_socket(mode_t mode) { return (mode & S_IFMT) == S_IFSOCK; }
inline bool is_sticky(mode_t mode) { return mode & S_ISVTX; }
inline bool is_setuid(mode_t mode) { return mode & S_ISUID; }
inline bool is_setgid(mode_t mode) { return mode & S_ISGID; }
struct InodeMetadata {
bool is_valid() const { return inode.is_valid(); }
@ -63,10 +63,10 @@ struct InodeMetadata {
if (u == 0)
return true;
if (uid == u)
return mode & 0400;
return mode & S_IRUSR;
if (gid == g || eg.contains(gid))
return mode & 0040;
return mode & 0004;
return mode & S_IRGRP;
return mode & S_IROTH;
}
bool may_write(uid_t u, gid_t g, const FixedArray<gid_t>& eg) const
@ -74,10 +74,10 @@ struct InodeMetadata {
if (u == 0)
return true;
if (uid == u)
return mode & 0200;
return mode & S_IWUSR;
if (gid == g || eg.contains(gid))
return mode & 0020;
return mode & 0002;
return mode & S_IWGRP;
return mode & S_IWOTH;
}
bool may_execute(uid_t u, gid_t g, const FixedArray<gid_t>& eg) const
@ -85,10 +85,10 @@ struct InodeMetadata {
if (u == 0)
return true;
if (uid == u)
return mode & 0100;
return mode & S_IXUSR;
if (gid == g || eg.contains(gid))
return mode & 0010;
return mode & 0001;
return mode & S_IXGRP;
return mode & S_IXOTH;
}
bool is_directory() const { return Kernel::is_directory(mode); }