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devfs: maxseek

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Matheus
2023-09-09 00:30:43 -03:00
parent a83a561094
commit fe303aec69
4 changed files with 35 additions and 12 deletions
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kernel-src/include/kernel/devfs.h
+1
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@@ -24,6 +24,7 @@ typedef struct {
int (*munmap)(int minor, void *addr, uintmax_t offset, int flags);
int (*isatty)(int minor);
int (*ioctl)(int minor, unsigned long request, void *arg, int *result);
int (*maxseek)(int minor, size_t *max);
} devops_t;
typedef struct devnode_t {
kernel-src/include/kernel/vfs.h
+2
View File
@@ -96,6 +96,7 @@ typedef struct vops_t {
int (*getdents)(vnode_t *node, dent_t *buffer, size_t count, uintmax_t offset, size_t *readcount);
int (*isatty)(vnode_t *node);
int (*ioctl)(vnode_t *node, unsigned long request, void *arg, int *result);
int (*maxseek)(vnode_t *node, size_t *max);
int (*resize)(vnode_t *node, size_t newsize, cred_t *cred);
} vops_t;
@@ -142,6 +143,7 @@ typedef struct vops_t {
#define VOP_POLL(v, d, p) (v)->ops->poll(v, d, p)
#define VOP_ISATTY(v) ((v)->ops->isatty ? (v)->ops->isatty(v) : ENOTTY)
#define VOP_IOCTL(v, r, a, rp) ((v)->ops->ioctl ? (v)->ops->ioctl(v, r, a, rp) : ENOTTY)
#define VOP_MAXSEEK(v, rp) ((v)->ops->maxseek ? (v)->ops->maxseek(v, rp) : ENOTTY)
#define VOP_RESIZE(v, s, c) (v)->ops->resize(v, s, c)
#define VOP_HOLD(v) __atomic_add_fetch(&(v)->refcount, 1, __ATOMIC_SEQ_CST)
#define VOP_RELEASE(v) {\