Paparazzi UAS  v5.15_devel-99-g2ff7410
Paparazzi is a free software Unmanned Aircraft System.
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virt2phys.h
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1 #ifndef PARROT_VIRT2PHYS
2 #define PARROT_VIRT2PHYS
3 
4 #include <sys/types.h>
5 #include <unistd.h>
6 
7 struct physmem {
8  unsigned long paddr;
9  size_t size;
10 };
11 
12 /* check_contiguity - Get information on physical memory associated with virtual
13  * address.
14  *
15  * @param[in] vaddr : the virtual address in the context of process pid
16  * @param[in] pid : a valid pid
17  * @param[in] *pmem : Valid only if fonction returns 0.
18  * pmem->paddr contains physical address of the first byte.
19  * pmem->size contains the number of contiguous bytes checked. If size is not zero, buffer is contiguous if pmem->size >= size.
20  * @param[in] size : if size>0 contiguity is checked as far as possible.
21  * : if size=0, check contiguity until at least size bytes had been checked as contiguous.
22  * @return 0 if vaddr can be converted in physical address and -1 otherwise.
23  */
24 int check_contiguity(unsigned long vaddr, pid_t pid, struct physmem *pmem, size_t size);
25 
26 #endif // PARROT_VIRT2PHYS
unsigned long paddr
Definition: virt2phys.h:8
int check_contiguity(unsigned long vaddr, pid_t pid, struct physmem *pmem, size_t size)
Definition: virt2phys.c:111
size_t size
Definition: virt2phys.h:9