24ec0d73b5
- introduce new call numbers, names, and field aliases; - initialize request messages to zero for all ABI calls; - format callnr.h in the same way as com.h; - redo call tables in both servers; - remove param.h namespace pollution in the servers; - make brk(2) go to VM directly, rather than through PM; - remove obsolete BRK, UTIME, and WAIT calls; - clean up path copying routine in VFS; - move remaining system calls from libminlib to libc; - correct some errno-related mistakes in libc routines. Change-Id: I2d8ec5d061cd7e0b30c51ffd77aa72ebf84e2565
95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
#include <sys/cdefs.h>
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#include "namespace.h"
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#include <lib.h>
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#include <sys/ioctl.h>
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#include <minix/i2c.h>
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#ifdef __weak_alias
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__weak_alias(ioctl, _ioctl)
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#endif
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static void rewrite_i2c_netbsd_to_minix(minix_i2c_ioctl_exec_t *out,
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i2c_ioctl_exec_t *in);
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static void rewrite_i2c_minix_to_netbsd(i2c_ioctl_exec_t *out,
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minix_i2c_ioctl_exec_t *in);
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static void rewrite_i2c_netbsd_to_minix(minix_i2c_ioctl_exec_t *out,
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i2c_ioctl_exec_t *in)
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{
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memset(out, '\0', sizeof(minix_i2c_ioctl_exec_t));
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out->iie_op = in->iie_op;
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out->iie_addr = in->iie_addr;
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out->iie_cmdlen = I2C_EXEC_MAX_CMDLEN < in->iie_cmdlen ?
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I2C_EXEC_MAX_CMDLEN : in->iie_cmdlen;
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out->iie_buflen = I2C_EXEC_MAX_BUFLEN < in->iie_buflen ?
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I2C_EXEC_MAX_BUFLEN : in->iie_buflen;
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if (in->iie_cmdlen > 0 && in->iie_cmd != NULL) {
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memcpy(out->iie_cmd, in->iie_cmd, in->iie_cmdlen);
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}
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if (in->iie_buflen > 0 && in->iie_buf != NULL) {
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memcpy(out->iie_buf, in->iie_buf, in->iie_buflen);
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}
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}
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static void rewrite_i2c_minix_to_netbsd(i2c_ioctl_exec_t *out,
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minix_i2c_ioctl_exec_t *in)
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{
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/* the only field that changes is iie_buf, everything else is the same */
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if (in->iie_buflen > 0 && in->iie_buf != NULL) {
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memcpy(out->iie_buf, in->iie_buf, in->iie_buflen);
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}
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}
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int ioctl(fd, request, data)
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int fd;
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unsigned long request;
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void *data;
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{
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int r, request_save;
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message m;
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void *addr;
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/*
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* To support compatibility with interfaces on other systems, certain
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* requests are re-written to flat structures (i.e. without pointers).
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*/
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minix_i2c_ioctl_exec_t i2c;
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request_save = request;
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switch (request) {
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case I2C_IOCTL_EXEC:
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rewrite_i2c_netbsd_to_minix(&i2c, data);
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addr = (void *) &i2c;
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request = MINIX_I2C_IOCTL_EXEC;
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break;
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default:
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/* Keep original as-is */
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addr = (void *) data;
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break;
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}
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memset(&m, 0, sizeof(m));
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m.VFS_IOCTL_FD = fd;
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m.VFS_IOCTL_REQ = request;
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m.VFS_IOCTL_ARG = (char *) addr;
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r = _syscall(VFS_PROC_NR, VFS_IOCTL, &m);
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/* Translate back to original form */
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switch (request_save) {
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case I2C_IOCTL_EXEC:
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rewrite_i2c_minix_to_netbsd(data, &i2c);
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break;
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default:
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/* Nothing to do */
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break;
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}
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return r;
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}
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