Subversion Repositories planix.SVN

/*
 * Posix stdio -- fdopen
 */
#include "iolib.h"
/*
 * Open the named file with the given mode, using the given FILE
 * Legal modes are given below, `additional characters may follow these sequences':
 * r rb         open to read
 * w wb         open to write, truncating
 * a ab         open to write positioned at eof, creating if non-existant
 * r+ r+b rb+   open to read and write, creating if non-existant
 * w+ w+b wb+   open to read and write, truncating
 * a+ a+b ab+   open to read and write, positioned at eof, creating if non-existant.
 */
FILE *fdopen(const int fd, const char *mode){
        FILE *f;        
        qlock(&_stdiolk);
        for(f=_IO_stream;f!=&_IO_stream[FOPEN_MAX];f++)
                if(f->state==CLOSED)
                        break;
        if(f==&_IO_stream[FOPEN_MAX]) {
                qunlock(&_stdiolk);
                return NULL;
        }
        f->fd=fd;
        if(mode[0]=='a')
                seek(f->fd, 0L, 2);
        if(f->fd==-1) return NULL;
        f->flags=0;
        f->state=OPEN;
        f->buf=0;
        f->rp=0;
        f->wp=0;
        f->lp=0;
        qunlock(&_stdiolk);
        return f;
}