Assign a mapped ressource to init prog
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@ -5,6 +5,7 @@
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#include "paging.h"
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#include "thread.h"
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#include "types.h"
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#include "zero.h"
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/**
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* Make sure the program is in a valid ELF format, map it into memory,
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@ -17,6 +18,7 @@ uaddr_t loadElfProg(const char *prog, struct process *proc)
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{
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int i;
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uaddr_t lastUserAddr = 0;
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struct uAddrSpace *as = processGetAddrSpace(proc);
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/* e_ident value */
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#define ELFMAG0 0x7f
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@ -136,6 +138,11 @@ uaddr_t loadElfProg(const char *prog, struct process *proc)
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unrefPhyPage(ppage);
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}
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// Hack: Even if already allocated mark the adresse space as managed by a ressource
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// So this address space is not used by another ressource.
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uaddr = elf_phdrs[i].p_vaddr;
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zeroMmap(as, &uaddr, elf_phdrs[i].p_memsz, PAGING_MEM_USER | PAGING_MEM_WRITE | PAGING_MEM_READ, 0);
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/* Copy segment into memory */
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memcpy((void *)elf_phdrs[i].p_vaddr, (void *)(prog + elf_phdrs[i].p_offset),
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elf_phdrs[i].p_filesz);
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@ -57,6 +57,7 @@ int zeroOnMapped(struct uAddrVirtualReg *vreg)
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int zeroMmap(struct uAddrSpace *as, uaddr_t *uaddr, size_t size, uint32_t rights,
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uint32_t flags)
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{
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int ret = 0;
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struct mappedRessource *res =
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(struct mappedRessource *)zalloc(sizeof(struct mappedRessource));
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struct zeroMappedEntry *cust =
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@ -67,5 +68,12 @@ int zeroMmap(struct uAddrSpace *as, uaddr_t *uaddr, size_t size, uint32_t rights
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res->customData = cust;
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res->onResMapped = zeroOnMapped;
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return uAddrSpaceMmap(as, uaddr, size, rights, flags, res, 0);
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ret = uAddrSpaceMmap(as, uaddr, size, rights, flags, res, 0);
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if (ret) {
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free(res);
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free(cust);
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}
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return ret;
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}
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