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libc/stdio: Support 'e'(O_CLOEXEC) in lib_mode2oflags

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follow BSD and Linux convention:
https://man.openbsd.org/fopen
https://www.man7.org/linux/man-pages/man3/fopen.3.html

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao 2022-06-02 14:30:50 +08:00 committed by Petro Karashchenko
parent d8aa41de7b
commit df0e9da1ba
1 changed files with 16 additions and 1 deletions
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17
libs/libc/stdio/lib_fopen.c
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@ -49,7 +49,7 @@
#define MODE_NONE 0 /* No access mode determined */
#define MODE_MASK (MODE_R | MODE_W | MODE_A)
#define FLAG_KEEP (O_BINARY | O_EXCL)
#define FLAG_KEEP (O_BINARY | O_CLOEXEC | O_EXCL)
/****************************************************************************
* Public Functions
@ -263,6 +263,21 @@ int lib_mode2oflags(FAR const char *mode)
}
break;
/* Open for close on execute */
case 'e' :
if ((state & MODE_MASK) != MODE_NONE)
{
/* The file will be closed on execute */
oflags |= O_CLOEXEC;
}
else
{
goto errout;
}
break;
/* Open for exclusive access ("{r|w|a|b|+}x") */
case 'x' :