% PT_IMAGE_REMOVE_BY_FILENAME(3)
pt_image_remove_by_filename, pt_image_remove_by_asid - remove sections from a traced memory image descriptor
#include <intel-pt.h> |
|---|
| int pt_image_remove_by_filename(struct pt_image *image, |
| const char *filename, |
| const struct pt_asid *asid); |
| int pt_image_remove_by_asid(struct pt_image *image, |
| const struct pt_asid *asid); |
Link with -lipt.
pt_image_remove_by_filename() removes all sections from image that were added by a call to pt_image_add_file(3) with an identical filename argument or by a call to pt_image_copy(3) from such a section. Sections that are based on the same underlying file but that were added using a different filename argument are not removed.
If the asid argument is not NULL, it removes only sections that were added with a matching address-space identifier. See pt_image_add_file(3).
pt_image_remove_by_asid(3) removes all sections from image that were added by a call to pt_image_add_file(3) with a matching asid argument or by a call to pt_image_copy(3) from such a section. See pt_image_add_file(3).
Two pt_asid objects match in their "cr3 or vmcs field if one of them does not provide the field (i.e. sets it to pt_asid_no_cr3 or pt_asid_no_vmcs respectively) or if the provided values are identical. Two pt_asid* objects match if they match in all fields.
Both functions return the number of sections removed on success or a negative pt_error_code enumeration constant in case of an error.
int foo(struct pt_image *image, uint64_t cr3) { struct pt_asid asid1, asid2; int errcode; pt_asid_init(&asid1); asid1.cr3 = cr3; pt_asid_init(&asid2); asid2.cr3 = ~cr3; errcode = pt_image_add_file(image, "/path/to/libfoo.so", 0xa000, 0x100, &asid1, 0xb000); if (errcode < 0) return errcode; errcode = pt_image_add_file(image, "rel/path/to/libfoo.so", 0xa000, 0x100, &asid1, 0xc000); if (errcode < 0) return errcode; /* This call would only remove the section added first: * * - filename matches only the first section's filename * - NULL matches every asid */ (void) pt_image_remove_by_filename(image, "/path/to/libfoo.so", NULL); /* This call would not remove any of the above sections: * * - filename matches the first section's filename * - asid2 does not match asid1 */ (void) pt_image_remove_by_filename(image, "/path/to/libfoo.so", &asid2); /* This call would not remove any of the above sections: * * - asid2 does not match asid1 */ (void) pt_image_remove_by_asid(image, &asid2); /* This call would remove both sections: * * - asid1 matches itself */ (void) pt_image_remove_by_asid(image, &asid1); /* This call would remove both sections: * * - NULL matches every asid */ (void) pt_image_remove_by_asid(image, NULL); }
pt_image_alloc(3), pt_image_free(3), pt_image_add_file(3), pt_image_add_cached(3), pt_image_copy(3), pt_insn_set_image(3), pt_insn_get_image(3)