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allow O_TMPFILE to work with O_WRONLY

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-07-20 03:11:32 +04:00
parent c0d15cc7ee
commit ba57ea64cb
2 changed files with 4 additions and 2 deletions
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2
fs/open.c
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@ -844,6 +844,8 @@ static inline int build_open_flags(int flags, umode_t mode, struct open_flags *o
if ((flags & O_TMPFILE_MASK) != O_TMPFILE) if ((flags & O_TMPFILE_MASK) != O_TMPFILE)
return -EINVAL; return -EINVAL;
acc_mode = MAY_OPEN | ACC_MODE(flags); acc_mode = MAY_OPEN | ACC_MODE(flags);
if (!(acc_mode & MAY_WRITE))
return -EINVAL;
} else if (flags & O_PATH) { } else if (flags & O_PATH) {
/* /*
* If we have O_PATH in the open flag. Then we * If we have O_PATH in the open flag. Then we

4
include/uapi/asm-generic/fcntl.h
View File

@ -89,8 +89,8 @@
#endif #endif
/* a horrid kludge trying to make sure that this will fail on old kernels */ /* a horrid kludge trying to make sure that this will fail on old kernels */
#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY | O_RDWR) #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
#define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT | O_ACCMODE) #define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT)
#ifndef O_NDELAY #ifndef O_NDELAY
#define O_NDELAY O_NONBLOCK #define O_NDELAY O_NONBLOCK