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devfs: handle devices not supporting certain operations

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Matheus
2023-05-06 18:01:27 -03:00
parent 0ab91b26be
commit bb5c46d645
1 changed files with 21 additions and 0 deletions
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kernel-src/fs/devfs.c
+21
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@@ -41,6 +41,9 @@ int devfs_open(vnode_t **node, int flags, cred_t *cred) {
if (devnode->master)
devnode = devnode->master;
if (devnode->devops->open == NULL)
return ENODEV;
return devnode->devops->open(devnode->attr.rdevminor, flags);
}
@@ -49,6 +52,9 @@ int devfs_close(vnode_t *node, int flags, cred_t *cred) {
if (devnode->master)
devnode = devnode->master;
if (devnode->devops->close == NULL)
return ENODEV;
return devnode->devops->close(devnode->attr.rdevminor, flags);
}
@@ -57,6 +63,9 @@ int devfs_read(vnode_t *node, void *buffer, size_t size, uintmax_t offset, int f
if (devnode->master)
devnode = devnode->master;
if (devnode->devops->read == NULL)
return ENODEV;
return devnode->devops->read(devnode->attr.rdevminor, buffer, size, offset, flags, readc);
}
@@ -65,6 +74,9 @@ int devfs_write(vnode_t *node, void *buffer, size_t size, uintmax_t offset, int
if (devnode->master)
devnode = devnode->master;
if (devnode->devops->write == NULL)
return ENODEV;
return devnode->devops->write(devnode->attr.rdevminor, buffer, size, offset, flags, writec);
}
@@ -124,6 +136,9 @@ int devfs_poll(vnode_t *node, int events) {
if (devnode->master)
devnode = devnode->master;
if (devnode->devops->poll == NULL)
return ENODEV;
return devnode->devops->poll(devnode->attr.rdevminor, events);
}
@@ -132,6 +147,9 @@ int devfs_mmap(vnode_t *node, void *addr, uintmax_t offset, int flags, cred_t *c
if (devnode->master)
devnode = devnode->master;
if (devnode->devops->mmap == NULL)
return ENODEV;
return devnode->devops->mmap(devnode->attr.rdevminor, addr, offset, flags);
}
@@ -140,6 +158,9 @@ int devfs_munmap(vnode_t *node, void *addr, uintmax_t offset, int flags, cred_t
if (devnode->master)
devnode = devnode->master;
if (devnode->devops->munmap == NULL)
return ENODEV;
return devnode->devops->munmap(devnode->attr.rdevminor, addr, offset, flags);
}