92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
#define _GNU_SOURCE
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#include <fcntl.h>
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#include <stdarg.h>
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#include <errno.h>
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#include "syscall.h"
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#ifndef NO_LITTLE_MODE
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#include "syscall_backend.h"
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#endif
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int fcntl(int fd, int cmd, ...)
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{
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unsigned long arg;
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va_list ap;
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va_start(ap, cmd);
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arg = va_arg(ap, unsigned long);
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va_end(ap);
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if (cmd == F_SETFL) arg |= O_LARGEFILE;
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#ifdef NO_LITTLE_MODE
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if (cmd == F_SETLKW) return syscall_cp(SYS_fcntl, fd, cmd, (void *)arg);
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#else
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if (cmd == F_SETLKW) return be_fcntl(fd, cmd, (void *)arg);
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#endif
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if (cmd == F_GETOWN) {
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struct f_owner_ex ex;
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#ifdef NO_LITTLE_MODE
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int ret = __syscall(SYS_fcntl, fd, F_GETOWN_EX, &ex);
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#else
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int ret = be_fcntl(fd, F_GETOWN_EX, &ex);
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#endif
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#ifdef NO_LITTLE_MODE
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if (ret == -EINVAL) return __syscall(SYS_fcntl, fd, cmd, (void *)arg);
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#else
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if (ret == -EINVAL) return be_fcntl(fd, cmd, (void *)arg);
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#endif
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if (ret) return __syscall_ret(ret);
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return ex.type == F_OWNER_PGRP ? -ex.pid : ex.pid;
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}
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if (cmd == F_DUPFD_CLOEXEC) {
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#ifdef NO_LITTLE_MODE
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int ret = __syscall(SYS_fcntl, fd, F_DUPFD_CLOEXEC, arg);
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#else
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int ret = be_fcntl( fd, F_DUPFD_CLOEXEC, (void *)arg);
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#endif
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if (ret != -EINVAL) {
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if (ret >= 0)
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#ifdef NO_LITTLE_MODE
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__syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC);
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#else
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be_fcntl(ret, F_SETFD, (void *)FD_CLOEXEC);
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#endif
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return __syscall_ret(ret);
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}
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#ifdef NO_LITTLE_MODE
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ret = __syscall(SYS_fcntl, fd, F_DUPFD_CLOEXEC, 0);
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#else
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ret = be_fcntl(fd, F_DUPFD_CLOEXEC, 0);
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#endif
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if (ret != -EINVAL) {
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#ifdef NO_LITTLE_MODE
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if (ret >= 0) __syscall(SYS_close, ret);
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#else
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if (ret >= 0) be_close(ret);
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#endif
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return __syscall_ret(-EINVAL);
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}
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#ifdef NO_LITTLE_MODE
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ret = __syscall(SYS_fcntl, fd, F_DUPFD, arg);
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if (ret >= 0) __syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC);
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#else
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ret = be_fcntl(fd, F_DUPFD, (void *)arg);
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if (ret >= 0) be_fcntl(ret, F_SETFD, (void *)FD_CLOEXEC);
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#endif
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return __syscall_ret(ret);
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}
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switch (cmd) {
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case F_SETLK:
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case F_GETLK:
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case F_GETOWN_EX:
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case F_SETOWN_EX:
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#ifdef NO_LITTLE_MODE
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return syscall(SYS_fcntl, fd, cmd, (void *)arg);
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#else
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return be_fcntl(fd, cmd, (void *)arg);
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#endif
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default:
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#ifdef NO_LITTLE_MODE
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return syscall(SYS_fcntl, fd, cmd, arg);
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#else
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return be_fcntl(fd, cmd, (void *)arg);
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#endif
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}
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}
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