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optimize legacy ffs function
[musl]
/
src
/
stdio
/
__fdopen.c
diff --git
a/src/stdio/__fdopen.c
b/src/stdio/__fdopen.c
index
6ad7c57
..
8bd51c6
100644
(file)
--- a/
src/stdio/__fdopen.c
+++ b/
src/stdio/__fdopen.c
@@
-7,7
+7,10
@@
FILE *__fdopen(int fd, const char *mode)
int plus = !!strchr(mode, '+');
/* Check for valid initial mode character */
int plus = !!strchr(mode, '+');
/* Check for valid initial mode character */
- if (!strchr("rwa", *mode)) return 0;
+ if (!strchr("rwa", *mode)) {
+ errno = EINVAL;
+ return 0;
+ }
/* Allocate FILE+buffer or fail */
if (!(f=malloc(sizeof *f + UNGET + BUFSIZ))) return 0;
/* Allocate FILE+buffer or fail */
if (!(f=malloc(sizeof *f + UNGET + BUFSIZ))) return 0;
@@
-20,8
+23,8
@@
FILE *__fdopen(int fd, const char *mode)
/* Set append mode on fd if opened for append */
if (*mode == 'a') {
/* Set append mode on fd if opened for append */
if (*mode == 'a') {
- int flags = __syscall
_fcntl(fd, F_GETFL, 0
);
- __syscall
_fcntl(
fd, F_SETFL, flags | O_APPEND);
+ int flags = __syscall
(SYS_fcntl, fd, F_GETFL
);
+ __syscall
(SYS_fcntl,
fd, F_SETFL, flags | O_APPEND);
}
f->fd = fd;
}
f->fd = fd;
@@
-30,7
+33,7
@@
FILE *__fdopen(int fd, const char *mode)
/* Activate line buffered mode for terminals */
f->lbf = EOF;
/* Activate line buffered mode for terminals */
f->lbf = EOF;
- if (!(f->flags & F_NOWR) && !__syscall
_ioctl(
fd, TCGETS, &tio))
+ if (!(f->flags & F_NOWR) && !__syscall
(SYS_ioctl,
fd, TCGETS, &tio))
f->lbf = '\n';
/* Initialize op ptrs. No problem if some are unneeded. */
f->lbf = '\n';
/* Initialize op ptrs. No problem if some are unneeded. */
@@
-39,11
+42,13
@@
FILE *__fdopen(int fd, const char *mode)
f->seek = __stdio_seek;
f->close = __stdio_close;
f->seek = __stdio_seek;
f->close = __stdio_close;
+ if (!libc.threaded) f->lock = -1;
+
/* Add new FILE to open file list */
OFLLOCK();
/* Add new FILE to open file list */
OFLLOCK();
- f->next = ofl_head;
- if (
ofl_head)
ofl_head->prev = f;
- ofl_head = f;
+ f->next =
libc.
ofl_head;
+ if (
libc.ofl_head) libc.
ofl_head->prev = f;
+
libc.
ofl_head = f;
OFLUNLOCK();
return f;
OFLUNLOCK();
return f;