Unverified Commit a7795a9d authored by Tommaso Tocci's avatar Tommaso Tocci
Browse files

intercept statat

parent 76ea4f61

ifs/include/preload/passthrough.hpp

+2 −0
Original line number Diff line number Diff line
@@ -37,6 +37,8 @@ extern void* libc___xstat; 
extern void* libc___xstat64;

extern void* libc___fxstat;

extern void* libc___fxstat64;

extern void* libc___fxstatat;

extern void* libc___fxstatat64;

extern void* libc___lxstat;

extern void* libc___lxstat64;

ifs/src/preload/intcp_functions.cpp

+27 −0
Original line number Diff line number Diff line
@@ -2,6 +2,8 @@ 
 * All intercepted functions are defined here

 */

#include <sys/statfs.h>

#include <sys/stat.h>

#include <sys/uio.h>



#include <preload/preload.hpp>

#include <preload/passthrough.hpp>
@@ -402,6 +404,31 @@ int __fxstat(int ver, int fd, struct stat* buf) __THROW { 
    return (reinterpret_cast<decltype(&__fxstat)>(libc___fxstat))(ver, fd, buf);

}



int __fxstatat(int ver, int dirfd, const char * path, struct stat * buf, int flags) {

    init_passthrough_if_needed();

    if(CTX->initialized()) {

        CTX->log()->trace("{}() called with path '{}'", __func__, path);

        std::string rel_path(path);

        if (CTX->relativize_path(rel_path)) {

            return adafs_stat(rel_path, buf);

        }

    }

    return (reinterpret_cast<decltype(&__fxstatat)>(libc___fxstatat))(ver, dirfd, path, buf, flags);

}



int __fxstatat64(int ver, int dirfd, const char * path, struct stat64 * buf, int flags) {

    init_passthrough_if_needed();

    if(CTX->initialized()) {

        CTX->log()->trace("{}() called with path '{}'", __func__, path);

        std::string rel_path(path);

        if (CTX->relativize_path(rel_path)) {

            return adafs_stat64(rel_path, buf);

        }

    }

    return (reinterpret_cast<decltype(&__fxstatat64)>(libc___fxstatat64))(ver, dirfd, path, buf, flags);



}



int __fxstat64(int ver, int fd, struct stat64* buf) __THROW {

    init_passthrough_if_needed();

    if(CTX->initialized()) {

ifs/src/preload/passthrough.cpp

+4 −0
Original line number Diff line number Diff line
@@ -41,6 +41,8 @@ void* libc___xstat; 
void* libc___xstat64;

void* libc___fxstat;

void* libc___fxstat64;

void* libc___fxstatat;

void* libc___fxstatat64;

void* libc___lxstat;

void* libc___lxstat64;
@@ -118,6 +120,8 @@ void init_passthrough_() { 
    libc___xstat64 = dlsym(libc, "__xstat64");

    libc___fxstat = dlsym(libc, "__fxstat");

    libc___fxstat64 = dlsym(libc, "__fxstat64");

    libc___fxstatat = dlsym(libc, "__fxstatat");

    libc___fxstatat64 = dlsym(libc, "__fxstatat64");

    libc___lxstat = dlsym(libc, "__lxstat");

    libc___lxstat64 = dlsym(libc, "__lxstat64");