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[/] [c0or1k/] [trunk/] [conts/] [posix/] [libposix/] [close.c] - Rev 2
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/* * l4/posix glue for close() and fsync() * * Copyright (C) 2007 Bahadir Balban */ #include <errno.h> #include <stdio.h> #include <unistd.h> #include <l4lib/ipcdefs.h> #include <l4lib/utcb.h> #include <l4/macros.h> #include INC_GLUE(memory.h) #include <libposix.h> static inline int l4_close(int fd) { write_mr(L4SYS_ARG0, fd); /* Call pager with close() request. Check ipc error. */ if ((fd = l4_sendrecv(pagerid, pagerid, L4_IPC_TAG_CLOSE)) < 0) { print_err("%s: L4 IPC Error: %d.\n", __FUNCTION__, fd); return fd; } /* Check if syscall itself was successful */ if ((fd = l4_get_retval()) < 0) { print_err("%s: CLOSE Error: %d.\n", __FUNCTION__, fd); return fd; } return fd; } int close(int fd) { int ret = l4_close(fd); /* If error, return positive error code */ if (ret < 0) { errno = -ret; return -1; } /* else return value */ return ret; } static inline int l4_fsync(int fd) { write_mr(L4SYS_ARG0, fd); /* Call pager with close() request. Check ipc error. */ if ((fd = l4_sendrecv(pagerid, pagerid, L4_IPC_TAG_FSYNC)) < 0) { print_err("%s: L4 IPC Error: %d.\n", __FUNCTION__, fd); return fd; } /* Check if syscall itself was successful */ if ((fd = l4_get_retval()) < 0) { print_err("%s: CLOSE Error: %d.\n", __FUNCTION__, fd); return fd; } return fd; } int fsync(int fd) { int ret = l4_fsync(fd); /* If error, return positive error code */ if (ret < 0) { errno = -ret; return -1; } /* else return value */ return ret; }