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setsockopt: refactor

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Matheus
2026-04-01 17:20:11 -03:00
parent e52a69fc83
commit d20c86f70d
1 changed files with 35 additions and 49 deletions
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kernel-src/sys/syscalls/setsockopt.c
+35 -49
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@@ -2,6 +2,7 @@
#include <kernel/sock.h> #include <kernel/sock.h>
#include <kernel/abi.h> #include <kernel/abi.h>
#include <kernel/file.h> #include <kernel/file.h>
#include <kernel/usercopy.h>
#include <errno.h> #include <errno.h>
syscallret_t syscall_setsockopt(context_t *, int fd, int level, int optname, void *val, size_t len) { syscallret_t syscall_setsockopt(context_t *, int fd, int level, int optname, void *val, size_t len) {
@@ -9,28 +10,8 @@ syscallret_t syscall_setsockopt(context_t *, int fd, int level, int optname, voi
.ret = -1 .ret = -1
}; };
if (level != SOL_SOCKET) {
ret.errno = ENOPROTOOPT;
return ret;
}
void *buffer = NULL;
if (val) {
buffer = alloc(len);
if (buffer == NULL) {
ret.errno = ENOMEM;
return ret;
}
ret.errno = usercopy_fromuser(buffer, val, len);
if (ret.errno) {
free(buffer);
return ret;
}
}
file_t *file = fd_get(fd); file_t *file = fd_get(fd);
if (file == NULL) { if (file == NULL) {
free(buffer);
ret.errno = EBADF; ret.errno = EBADF;
return ret; return ret;
} }
@@ -42,36 +23,44 @@ syscallret_t syscall_setsockopt(context_t *, int fd, int level, int optname, voi
socket_t *socket = SOCKFS_SOCKET_FROM_NODE(file->vnode); socket_t *socket = SOCKFS_SOCKET_FROM_NODE(file->vnode);
MUTEX_ACQUIRE(&socket->mutex); MUTEX_ACQUIRE(&socket->mutex);
switch (optname) { if (level == SOL_SOCKET) {
case SO_BINDTODEVICE: { // handle some generic cases here
if (val) { switch (optname) {
socket->netdev = netdev_getdev(buffer); case SO_BINDTODEVICE: {
ret.errno = socket->netdev ? 0 : ENODEV; if (val) {
} else { size_t size;
socket->netdev = NULL; ret.errno = usercopy_strlen(val, &size);
if (ret.errno)
break;
if (size > 32) {
ret.errno = EINVAL;
break;
}
char name[size + 1];
ret.errno = usercopy_fromuser(name, val, size);
if (ret.errno)
break;
name[size] = '\0';
socket->netdev = netdev_getdev(name);
ret.errno = socket->netdev ? 0 : ENODEV;
} else {
socket->netdev = NULL;
}
break;
} }
break; case SO_BROADCAST: {
} ret.errno = usercopy_fromuser(&socket->broadcast, val, sizeof(int));
case SO_BROADCAST: { break;
if (val == NULL) {
ret.errno = EFAULT;
} else {
socket->broadcast = *((int *)buffer);
ret.errno = 0;
} }
break; default:
ret.errno = socket->ops->setopt ? socket->ops->setopt(socket, level, optname, val, len, &current_thread()->proc->cred) : ENOPROTOOPT;
} }
case SO_KEEPALIVE: { } else {
if (val == NULL) ret.errno = socket->ops->setopt ? socket->ops->setopt(socket, level, optname, val, len, &current_thread()->proc->cred) : ENOPROTOOPT;
ret.errno = EFAULT;
else
ret.errno = socket->ops->setopt ? socket->ops->setopt(socket, optname, buffer, len, &current_thread()->proc->cred) : ENOPROTOOPT;
break;
}
default:
ret.errno = ENOPROTOOPT;
} }
MUTEX_RELEASE(&socket->mutex); MUTEX_RELEASE(&socket->mutex);
@@ -81,8 +70,5 @@ syscallret_t syscall_setsockopt(context_t *, int fd, int level, int optname, voi
fd_release(file); fd_release(file);
if (val)
free(buffer);
return ret; return ret;
} }