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[*] Initial strace run with jchroot on the command ./usr/sbin/apac-update to identify missing areas

[*] Emulating binary name: apac-update in strace mode to identify missing areas (with jchroot)

[*] Emulator used: qemu-arm-static

[*] Chroot environment used: jchroot

[*] Using root directory: /logs/s115_usermode_emulator/firmware/patool_extraction/rootfs.img_unblob_extracted/rootfs.img_extract/0-50593792.squashfs_v4_le_extract (1/2)

[*] Using CPU config: 

1 brk(NULL) = 0x4001200c

1 uname(0x3ff1d8e0) = 0

1 access("/etc/ld.so.preload",R_OK) = 0

1 openat(AT_FDCWD,"/etc/ld.so.preload",O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3

1 statx(3,"",AT_EMPTY_PATH|AT_NO_AUTOMOUNT,STATX_BASIC_STATS,0x3ff1d8b0) = 0

1 mmap2(NULL,19,PROT_READ|PROT_WRITE,MAP_PRIVATE,3,0) = 0x3f7cf000

1 close(3) = 0

1 munmap(0x3f7cf000,19) = 0

1 openat(AT_FDCWD,"/etc/ld.so.cache",O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 errno=2 (No such file or directory)

1 openat(AT_FDCWD,"/usr/lib/tls/v8l/neon/vfp/libglib-2.0.so.0",O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3

1 read(3,0x3ff1d1f0,512) = 512

1 statx(3,"",AT_EMPTY_PATH|AT_NO_AUTOMOUNT,STATX_BASIC_STATS,0x3ff1cf38) = 0

1 mmap2(NULL,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0) = 0x3f7ce000

1 mmap2(NULL,965448,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 0x3f6e2000

1 mprotect(0x3f7bc000,65536,PROT_NONE) = 0

1 mmap2(0x3f7cc000,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0xda) = 0x3f7cc000

1 close(3) = 0

1 openat(AT_FDCWD,"/usr/lib/tls/v8l/neon/vfp/libc.so.6",O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3

1 read(3,0x3ff1d1e0,512) = 512

1 statx(3,"",AT_EMPTY_PATH|AT_NO_AUTOMOUNT,STATX_BASIC_STATS,0x3ff1cf28) = 0

1 mmap2(NULL,1148532,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 0x3f5c9000

1 mprotect(0x3f6c6000,61440,PROT_NONE) = 0

1 mmap2(0x3f6d5000,16384,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0xfc) = 0x3f6d5000

1 mmap2(0x3f6d9000,34420,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,-1,0) = 0x3f6d9000

1 close(3) = 0

1 openat(AT_FDCWD,"/usr/lib/tls/v8l/neon/vfp/libpcre.so.1",O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3

1 read(3,0x3ff1d1c0,512) = 512

1 statx(3,"",AT_EMPTY_PATH|AT_NO_AUTOMOUNT,STATX_BASIC_STATS,0x3ff1cf08) = 0

1 mmap2(NULL,389196,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 0x3f569000

1 mprotect(0x3f5b7000,65536,PROT_NONE) = 0

1 mmap2(0x3f5c7000,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0x4e) = 0x3f5c7000

1 close(3) = 0

1 set_tid_address(0x3f7cef08) = 1

1 set_robust_list(0x3f7cef10,12) = -1 errno=38 (Function not implemented)

1 mprotect(0x3f6d5000,8192,PROT_READ) = 0

1 mprotect(0x3f5c7000,4096,PROT_READ) = 0

1 mprotect(0x3f7cc000,4096,PROT_READ) = 0

1 mprotect(0x40011000,4096,PROT_READ) = 0

1 mprotect(0x3f7fd000,4096,PROT_READ) = 0

1 ugetrlimit(3,1072814712,1064154420,1064179122,1,1064136292) = 0

1 brk(NULL) = 0x4001200c

1 brk(0x4003300c) = 0x4003300c

1 brk(0x40034000) = 0x40034000

1 clock_gettime64(CLOCK_REALTIME,0x3ff1dc48) = 0 ({tv_sec=1690035967,tv_nsec=643860648})

1 statx(1,"",AT_EMPTY_PATH|AT_NO_AUTOMOUNT,STATX_BASIC_STATS,0x3ff1d4a8) = 0

1 write(1,0x40015808,202)Usage:

Grant a certain user permission to do a certain action:

  ./usr/sbin/apac-update grant username action_id

Revoke all dynamic permissions for a user:

  ./usr/sbin/apac-update revoke-all username

 = 202

1 exit_group(1)

[*] Identification of missing filesytem areas.

[*] Found missing area: /etc/ld.so.cache

[*] Trying to identify this missing file: ld.so.cache

[*] Missing file /logs/s115_usermode_emulator/firmware/patool_extraction/rootfs.img_unblob_extracted/rootfs.img_extract/0-50593792.squashfs_v4_le_extract/etc/ld.so.cache

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