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libvmmapi: Add vm_close()
Currently there is no way to safely free a vm structure without leaking the fd. vm_destroy() closes the fd but also destroys the VM whereas in some cases a VM needs to be opened (vm_open) and then closed (vm_close). Reviewed by: jhb Sponsored by: vStack Differential Revision: https://reviews.freebsd.org/D35073
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@ -140,6 +140,15 @@ vm_open(const char *name)
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return (NULL);
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}
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void
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vm_close(struct vmctx *vm)
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{
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assert(vm != NULL);
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close(vm->fd);
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free(vm);
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}
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void
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vm_destroy(struct vmctx *vm)
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{
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@ -33,6 +33,7 @@
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#include <sys/param.h>
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#include <sys/cpuset.h>
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#include <machine/vmm.h>
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#include <machine/vmm_dev.h>
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#include <stdbool.h>
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@ -117,6 +118,7 @@ int vm_munmap_memseg(struct vmctx *ctx, vm_paddr_t gpa, size_t len);
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int vm_create(const char *name);
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int vm_get_device_fd(struct vmctx *ctx);
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struct vmctx *vm_open(const char *name);
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void vm_close(struct vmctx *ctx);
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void vm_destroy(struct vmctx *ctx);
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int vm_parse_memsize(const char *optarg, size_t *memsize);
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int vm_setup_memory(struct vmctx *ctx, size_t len, enum vm_mmap_style s);
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