diff options
Diffstat (limited to 'libstore/device.c')
| -rw-r--r-- | libstore/device.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/libstore/device.c b/libstore/device.c index e002866d..986ca25b 100644 --- a/libstore/device.c +++ b/libstore/device.c @@ -1,7 +1,7 @@ /* Mach device store backend - Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. - Written by Miles Bader <miles@gnu.ai.mit.edu> + Copyright (C) 1995,96,97,99 Free Software Foundation, Inc. + Written by Miles Bader <miles@gnu.org> This file is part of the GNU Hurd. The GNU Hurd is free software; you can redistribute it and/or @@ -26,12 +26,33 @@ #include "store.h" +static inline error_t +dev_error (error_t err) +{ + /* Give the canonical POSIX error codes, + rather than letting the Mach code propagate up. */ + switch (err) + { + case D_IO_ERROR: return EIO; + case D_WOULD_BLOCK: return EAGAIN; + case D_NO_SUCH_DEVICE: return ENXIO; + case D_ALREADY_OPEN: return EBUSY; + case D_DEVICE_DOWN: return ENXIO; /* ? */ + case D_INVALID_OPERATION: return EBADF; /* ? */ + case D_NO_MEMORY: return ENOMEM; + default: + } + /* Anything unexpected propagates up where weirdness will get noticed. */ + return err; +} + static error_t dev_read (struct store *store, off_t addr, size_t index, mach_msg_type_number_t amount, void **buf, mach_msg_type_number_t *len) { - return device_read (store->port, 0, addr, amount, (io_buf_ptr_t *)buf, len); + return dev_error (device_read (store->port, 0, addr, amount, + (io_buf_ptr_t *)buf, len)); } static error_t @@ -39,7 +60,8 @@ dev_write (struct store *store, off_t addr, size_t index, void *buf, mach_msg_type_number_t len, mach_msg_type_number_t *amount) { - return device_write (store->port, 0, addr, (io_buf_ptr_t)buf, len, amount); + return dev_error (device_write (store->port, 0, addr, + (io_buf_ptr_t)buf, len, amount)); } static error_t @@ -54,7 +76,7 @@ dev_open (const char *name, int flags, const struct store_class *const *classes, struct store **store) { - return store_device_open (name, flags, store); + return dev_error (store_device_open (name, flags, store)); } static error_t @@ -203,7 +225,7 @@ store_device_create (device_t device, int flags, struct store **store) if (! err && sizes_len == DEV_GET_SIZE_COUNT) { block_size = sizes[DEV_GET_SIZE_RECORD_SIZE]; - + if (block_size) { run.start = 0; |