diff options
Diffstat (limited to 'extras/mini-os/lib/sys.c')
| -rw-r--r-- | extras/mini-os/lib/sys.c | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/extras/mini-os/lib/sys.c b/extras/mini-os/lib/sys.c index 3172d2a60f..6cb97b1932 100644 --- a/extras/mini-os/lib/sys.c +++ b/extras/mini-os/lib/sys.c @@ -289,6 +289,11 @@ int read(int fd, void *buf, size_t nbytes) return ret * sizeof(union xenfb_in_event); } #endif +#ifdef CONFIG_BLKFRONT + case FTYPE_BLK: { + return blkfront_posix_read(fd, buf, nbytes); + } +#endif default: break; } @@ -321,6 +326,10 @@ int write(int fd, const void *buf, size_t nbytes) netfront_xmit(files[fd].tap.dev, (void*) buf, nbytes); return nbytes; #endif +#ifdef CONFIG_BLKFRONT + case FTYPE_BLK: + return blkfront_posix_write(fd, buf, nbytes); +#endif default: break; } @@ -331,8 +340,37 @@ int write(int fd, const void *buf, size_t nbytes) off_t lseek(int fd, off_t offset, int whence) { - errno = ESPIPE; - return (off_t) -1; + switch(files[fd].type) { +#ifdef CONFIG_BLKFRONT + case FTYPE_BLK: + switch (whence) { + case SEEK_SET: + files[fd].file.offset = offset; + break; + case SEEK_CUR: + files[fd].file.offset += offset; + break; + case SEEK_END: + { + struct stat st; + int ret; + ret = fstat(fd, &st); + if (ret) + return -1; + files[fd].file.offset = st.st_size + offset; + break; + } + default: + errno = EINVAL; + return -1; + } + return files[fd].file.offset; + break; +#endif + default: /* Not implemented on this FTYPE */ + errno = ESPIPE; + return (off_t) -1; + } } int fsync(int fd) { @@ -447,6 +485,10 @@ int fstat(int fd, struct stat *buf) buf->st_ctime = time(NULL); return 0; } +#ifdef CONFIG_BLKFRONT + case FTYPE_BLK: + return blkfront_posix_fstat(fd, buf); +#endif default: break; } |