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| author | Szabolcs Nagy <nsz@port70.net> | 2014-10-01 22:25:40 +0200 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-10-08 11:39:28 -0400 |
| commit | a3763d64e0d65ed1902b36c521c57cd252b9c3be (patch) | |
| tree | 2b5d6e63779baaa524829e065d57ded57c4990ce | |
| parent | a0c90b9773bd9b5b6faa7a657e22794c1e643989 (diff) | |
| download | musl-a3763d64e0d65ed1902b36c521c57cd252b9c3be.tar.gz musl-a3763d64e0d65ed1902b36c521c57cd252b9c3be.tar.xz musl-a3763d64e0d65ed1902b36c521c57cd252b9c3be.zip | |
add new linux file sealing api to fcntl.h
new in linux v3.17 commit 40e041a2c858b3caefc757e26cb85bfceae5062b sealing allows some operations to be blocked on a file which makes file access safer when fds are shared between processes (only supported for shared mem fds currently) flags: F_SEAL_SEAL prevents further sealing F_SEAL_SHRINK prevents file from shrinking F_SEAL_GROW prevents file from growing F_SEAL_WRITE prevents writes fcntl commands: F_GET_SEALS get the current seal flags F_ADD_SEALS add new seal flags
| -rw-r--r-- | include/fcntl.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/fcntl.h b/include/fcntl.h index ff9fcb92..f5bfebc8 100644 --- a/include/fcntl.h +++ b/include/fcntl.h @@ -121,6 +121,13 @@ int posix_fallocate(int, off_t, off_t); #define F_CANCELLK 1029 #define F_SETPIPE_SZ 1031 #define F_GETPIPE_SZ 1032 +#define F_ADD_SEALS 1033 +#define F_GET_SEALS 1034 + +#define F_SEAL_SEAL 0x0001 +#define F_SEAL_SHRINK 0x0002 +#define F_SEAL_GROW 0x0004 +#define F_SEAL_WRITE 0x0008 #define DN_ACCESS 0x00000001 #define DN_MODIFY 0x00000002 |