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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@15282 27425a3e-05d8-49a3-a47f-9c15f0e5edd8

This commit is contained in:
Giovanni Di Sirio 2021-12-29 20:10:52 +00:00
parent e2d816d05c
commit 0bfd995bc9
2 changed files with 45 additions and 4 deletions
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1
os/common/utils/include/errcodes.h
View File

@ -66,6 +66,7 @@
#define CH_RET_ERANGE CH_ENCODE_ERROR(ERANGE) /* Result too large */ #define CH_RET_ERANGE CH_ENCODE_ERROR(ERANGE) /* Result too large */
#define CH_RET_ENAMETOOLONG CH_ENCODE_ERROR(ENAMETOOLONG)/* File or path name too long */ #define CH_RET_ENAMETOOLONG CH_ENCODE_ERROR(ENAMETOOLONG)/* File or path name too long */
#define CH_RET_ENOSYS CH_ENCODE_ERROR(ENOSYS) /* Syscall not implemented */ #define CH_RET_ENOSYS CH_ENCODE_ERROR(ENOSYS) /* Syscall not implemented */
#define CH_RET_EOVERFLOW CH_ENCODE_ERROR(EOVERFLOW) /* File offset overflow */
/** @} */ /** @} */
/*===========================================================================*/ /*===========================================================================*/

48
os/sb/host/sbposix.c
View File

@ -159,16 +159,56 @@ ssize_t sb_posix_write(int fd, const void *buf, size_t count) {
} }
off_t sb_posix_lseek(int fd, off_t offset, int whence) { off_t sb_posix_lseek(int fd, off_t offset, int whence) {
sb_class_t *sbp = (sb_class_t *)chThdGetSelfX()->ctx.syscall.p;
msg_t ret;
vfs_file_stat_t stat;
off_t finaloff;
(void)offset; if ((whence != SEEK_SET) || (whence == SEEK_CUR) || (whence != SEEK_END)) {
(void)whence; return CH_RET_EINVAL;
}
if ((fd == 0U) || (fd == 1U) || (fd == 2U)) { if (!is_valid_descriptor(&sbp->io, fd)) {
return CH_RET_EBADF;
}
if (sbp->io.attributes[fd] != 0) {
return CH_RET_EISDIR;
}
ret = vfsGetFileStat((struct vfs_file_node *)sbp->io.vfs_nodes[fd], &stat);
CH_RETURN_ON_ERROR(ret);
if ((stat.attr & VFS_NODE_ATTR_ISSTREAM) != 0U) {
return CH_RET_ESPIPE; return CH_RET_ESPIPE;
} }
return CH_RET_EBADF; switch (whence) {
case SEEK_SET:
finaloff = offset;
break;
case SEEK_CUR:
{
off_t oldoff = vfsGetFilePosition((struct vfs_file_node *)sbp->io.vfs_nodes[fd]);
CH_RETURN_ON_ERROR(oldoff);
finaloff = oldoff + offset;
}
break;
case SEEK_END:
finaloff = stat.size + offset;
break;
}
if (finaloff < 0) {
return CH_RET_EOVERFLOW;
}
ret = vfsSetFilePosition((struct vfs_file_node *)sbp->io.vfs_nodes[fd],
finaloff);
CH_RETURN_ON_ERROR(ret);
return finaloff;
} }
void sbPosixRegisterFileDescriptor(sb_class_t *sbp, void sbPosixRegisterFileDescriptor(sb_class_t *sbp,