diff options
author | Bruce Momjian | 2007-02-13 02:06:22 +0000 |
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committer | Bruce Momjian | 2007-02-13 02:06:22 +0000 |
commit | 82b4e64864b446bd3aeb6023300acf2597393e72 (patch) | |
tree | 28ac9a63f3f07fa58ab2622f5acc428bbe06fdef | |
parent | 0b6090233926af055cd9ea9b95fbdc6473fb3807 (diff) |
Add comment to explain why O_EXCL and O_TRUNC can be ignored in
openFlagsToCreateFileFlags() in certain cases.
-rw-r--r-- | src/port/open.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/port/open.c b/src/port/open.c index b8a5bab973..371ab46906 100644 --- a/src/port/open.c +++ b/src/port/open.c @@ -25,6 +25,7 @@ openFlagsToCreateFileFlags(int openFlags) { switch (openFlags & (O_CREAT | O_TRUNC | O_EXCL)) { + /* O_EXCL is meaningless without O_CREAT */ case 0: case O_EXCL: return OPEN_EXISTING; @@ -32,6 +33,7 @@ openFlagsToCreateFileFlags(int openFlags) case O_CREAT: return OPEN_ALWAYS; + /* O_EXCL is meaningless without O_CREAT */ case O_TRUNC: case O_TRUNC | O_EXCL: return TRUNCATE_EXISTING; @@ -39,6 +41,7 @@ openFlagsToCreateFileFlags(int openFlags) case O_CREAT | O_TRUNC: return CREATE_ALWAYS; + /* O_TRUNC is meaningless with O_CREAT */ case O_CREAT | O_EXCL: case O_CREAT | O_TRUNC | O_EXCL: return CREATE_NEW; |