| Message ID | 20200811164553.27713-4-Filip.Bozuta@syrmia.com |
|---|---|
| State | New |
| Headers | show |
| Series | Add strace support for printing arguments for a group of selected syscalls | expand |
Le 11/08/2020 à 18:45, Filip Bozuta a écrit : > This patch implements strace argument printing functionality for following syscalls: > > * mlock, munlock, mlockall, munlockall - lock and unlock memory > > int mlock(const void *addr, size_t len) > int munlock(const void *addr, size_t len) > int mlockall(int flags) > int munlockall(void) > man page: https://man7.org/linux/man-pages/man2/mlock.2.html > > Implementation notes: > > Syscall mlockall() takes an argument that is composed of predefined values > which represent flags that determine the type of locking operation that is > to be performed. For that reason, a printing function "print_mlockall" was > stated in file "strace.list". This printing function uses an already existing > function "print_flags()" to print the "flags" argument. These flags are stated > inside an array "mlockall_flags" that contains values of type "struct flags". > These values are instantiated using an existing macro "FLAG_TARGET()" that > crates aproppriate target flag values based on those defined in files > '/target_syscall.h'. These target flag values were changed from > "TARGET_MLOCKALL_MCL*" to "TARGET_MCL_*" so that they can be aproppriately set > and recognised in "strace.c" with "FLAG_TARGET()". Value for "MCL_ONFAULT" > was added in this patch. This value was also added in "syscall.c" in function > "target_to_host_mlockall_arg()". Because this flag value was added in kernel > version 4.4, it is enwrapped in an #ifdef directive (both in "syscall.c" and > in "strace.c") as to support older kernel versions. > The other syscalls have only primitive argument types, so the > rest of the implementation was handled by stating an appropriate > printing format in file "strace.list". Syscall mlock2() is not implemented in > "syscall.c" and thus it's argument printing is not implemented in this patch. > > Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> > Reviewed-by: Laurent Vivier <laurent@vivier.eu> > --- > linux-user/aarch64/target_syscall.h | 5 +++-- > linux-user/alpha/target_syscall.h | 5 +++-- > linux-user/arm/target_syscall.h | 6 ++++-- > linux-user/cris/target_syscall.h | 5 +++-- > linux-user/hppa/target_syscall.h | 5 +++-- > linux-user/i386/target_syscall.h | 5 +++-- > linux-user/m68k/target_syscall.h | 6 +++--- > linux-user/microblaze/target_syscall.h | 5 +++-- > linux-user/mips/target_syscall.h | 5 +++-- > linux-user/mips64/target_syscall.h | 5 +++-- > linux-user/nios2/target_syscall.h | 5 +++-- > linux-user/openrisc/target_syscall.h | 5 +++-- > linux-user/ppc/target_syscall.h | 5 +++-- > linux-user/riscv/target_syscall.h | 5 +++-- > linux-user/s390x/target_syscall.h | 5 +++-- > linux-user/sh4/target_syscall.h | 5 +++-- > linux-user/sparc/target_syscall.h | 5 +++-- > linux-user/sparc64/target_syscall.h | 5 +++-- > linux-user/strace.c | 21 +++++++++++++++++++++ > linux-user/strace.list | 8 ++++---- > linux-user/syscall.c | 10 ++++++++-- > linux-user/tilegx/target_syscall.h | 5 +++-- > linux-user/x86_64/target_syscall.h | 5 +++-- > linux-user/xtensa/target_syscall.h | 5 +++-- > 24 files changed, 97 insertions(+), 49 deletions(-) > > diff --git a/linux-user/aarch64/target_syscall.h b/linux-user/aarch64/target_syscall.h > index 995e475c73..3194e6b009 100644 > --- a/linux-user/aarch64/target_syscall.h > +++ b/linux-user/aarch64/target_syscall.h > @@ -16,8 +16,9 @@ struct target_pt_regs { > #define UNAME_MINIMUM_RELEASE "3.8.0" > #define TARGET_CLONE_BACKWARDS > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #define TARGET_PR_SVE_SET_VL 50 > #define TARGET_PR_SVE_GET_VL 51 > diff --git a/linux-user/alpha/target_syscall.h b/linux-user/alpha/target_syscall.h > index 3426cc5b4e..fd389422e3 100644 > --- a/linux-user/alpha/target_syscall.h > +++ b/linux-user/alpha/target_syscall.h > @@ -258,7 +258,8 @@ struct target_pt_regs { > #define TARGET_UAC_NOFIX 2 > #define TARGET_UAC_SIGBUS 4 > #define TARGET_MINSIGSTKSZ 4096 > -#define TARGET_MLOCKALL_MCL_CURRENT 0x2000 > -#define TARGET_MLOCKALL_MCL_FUTURE 0x4000 > +#define TARGET_MCL_CURRENT 0x2000 > +#define TARGET_MCL_FUTURE 0x4000 > +#define TARGET_MCL_ONFAULT 0x8000 > > #endif /* ALPHA_TARGET_SYSCALL_H */ > diff --git a/linux-user/arm/target_syscall.h b/linux-user/arm/target_syscall.h > index f85cbdaf56..e870ed7a54 100644 > --- a/linux-user/arm/target_syscall.h > +++ b/linux-user/arm/target_syscall.h > @@ -28,8 +28,10 @@ struct target_pt_regs { > #define TARGET_CLONE_BACKWARDS > > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > + > #define TARGET_WANT_OLD_SYS_SELECT > > #define TARGET_FORCE_SHMLBA > diff --git a/linux-user/cris/target_syscall.h b/linux-user/cris/target_syscall.h > index 29d69009ff..d109a6b42a 100644 > --- a/linux-user/cris/target_syscall.h > +++ b/linux-user/cris/target_syscall.h > @@ -40,7 +40,8 @@ struct target_pt_regs { > > #define TARGET_CLONE_BACKWARDS2 > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #endif > diff --git a/linux-user/hppa/target_syscall.h b/linux-user/hppa/target_syscall.h > index e2f366839d..f34e05edb5 100644 > --- a/linux-user/hppa/target_syscall.h > +++ b/linux-user/hppa/target_syscall.h > @@ -23,8 +23,9 @@ struct target_pt_regs { > #define UNAME_MINIMUM_RELEASE "2.6.32" > #define TARGET_CLONE_BACKWARDS > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #undef TARGET_ENOMSG > #define TARGET_ENOMSG 35 > diff --git a/linux-user/i386/target_syscall.h b/linux-user/i386/target_syscall.h > index 2854758134..ed356b3908 100644 > --- a/linux-user/i386/target_syscall.h > +++ b/linux-user/i386/target_syscall.h > @@ -151,8 +151,9 @@ struct target_vm86plus_struct { > > #define TARGET_CLONE_BACKWARDS > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > #define TARGET_WANT_OLD_SYS_SELECT > > #endif /* I386_TARGET_SYSCALL_H */ > diff --git a/linux-user/m68k/target_syscall.h b/linux-user/m68k/target_syscall.h > index c0366b1c62..23359a6299 100644 > --- a/linux-user/m68k/target_syscall.h > +++ b/linux-user/m68k/target_syscall.h > @@ -21,9 +21,9 @@ struct target_pt_regs { > #define UNAME_MINIMUM_RELEASE "2.6.32" > > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > - > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > #define TARGET_WANT_OLD_SYS_SELECT > > #endif /* M68K_TARGET_SYSCALL_H */ > diff --git a/linux-user/microblaze/target_syscall.h b/linux-user/microblaze/target_syscall.h > index 4141cbaa5e..7f653db34f 100644 > --- a/linux-user/microblaze/target_syscall.h > +++ b/linux-user/microblaze/target_syscall.h > @@ -50,8 +50,9 @@ struct target_pt_regs { > > #define TARGET_CLONE_BACKWARDS > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #define TARGET_WANT_NI_OLD_SELECT > > diff --git a/linux-user/mips/target_syscall.h b/linux-user/mips/target_syscall.h > index d5509a34a7..dd6fd7af8e 100644 > --- a/linux-user/mips/target_syscall.h > +++ b/linux-user/mips/target_syscall.h > @@ -234,8 +234,9 @@ struct target_pt_regs { > > #define TARGET_CLONE_BACKWARDS > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #define TARGET_FORCE_SHMLBA > > diff --git a/linux-user/mips64/target_syscall.h b/linux-user/mips64/target_syscall.h > index 8ccc46822c..8594955eec 100644 > --- a/linux-user/mips64/target_syscall.h > +++ b/linux-user/mips64/target_syscall.h > @@ -231,8 +231,9 @@ struct target_pt_regs { > > #define TARGET_CLONE_BACKWARDS > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #define TARGET_FORCE_SHMLBA > > diff --git a/linux-user/nios2/target_syscall.h b/linux-user/nios2/target_syscall.h > index f3b2a500f4..78006c24d4 100644 > --- a/linux-user/nios2/target_syscall.h > +++ b/linux-user/nios2/target_syscall.h > @@ -31,7 +31,8 @@ struct target_pt_regs { > }; > > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #endif /* NIOS2_TARGET_SYSCALL_H */ > diff --git a/linux-user/openrisc/target_syscall.h b/linux-user/openrisc/target_syscall.h > index d586d2a018..ef0d89a551 100644 > --- a/linux-user/openrisc/target_syscall.h > +++ b/linux-user/openrisc/target_syscall.h > @@ -16,8 +16,9 @@ struct target_pt_regs { > #define UNAME_MINIMUM_RELEASE "2.6.32" > > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #define MMAP_SHIFT TARGET_PAGE_BITS > > diff --git a/linux-user/ppc/target_syscall.h b/linux-user/ppc/target_syscall.h > index afc0570410..c461f878f2 100644 > --- a/linux-user/ppc/target_syscall.h > +++ b/linux-user/ppc/target_syscall.h > @@ -72,8 +72,9 @@ struct target_revectored_struct { > #define TARGET_CLONE_BACKWARDS > > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 0x2000 > -#define TARGET_MLOCKALL_MCL_FUTURE 0x4000 > +#define TARGET_MCL_CURRENT 0x2000 > +#define TARGET_MCL_FUTURE 0x4000 > +#define TARGET_MCL_ONFAULT 0x8000 > #define TARGET_WANT_NI_OLD_SELECT > > #endif /* PPC_TARGET_SYSCALL_H */ > diff --git a/linux-user/riscv/target_syscall.h b/linux-user/riscv/target_syscall.h > index a88e821f73..dc597c8972 100644 > --- a/linux-user/riscv/target_syscall.h > +++ b/linux-user/riscv/target_syscall.h > @@ -51,8 +51,9 @@ struct target_pt_regs { > #define UNAME_MINIMUM_RELEASE "4.15.0" > > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > /* clone(flags, newsp, ptidptr, tls, ctidptr) for RISC-V */ > /* This comes from linux/kernel/fork.c, CONFIG_CLONE_BACKWARDS */ > diff --git a/linux-user/s390x/target_syscall.h b/linux-user/s390x/target_syscall.h > index 8d4f609eaa..94f84178db 100644 > --- a/linux-user/s390x/target_syscall.h > +++ b/linux-user/s390x/target_syscall.h > @@ -28,7 +28,8 @@ struct target_pt_regs { > > #define TARGET_CLONE_BACKWARDS2 > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #endif /* S390X_TARGET_SYSCALL_H */ > diff --git a/linux-user/sh4/target_syscall.h b/linux-user/sh4/target_syscall.h > index 2b5f75be13..c1437adafe 100644 > --- a/linux-user/sh4/target_syscall.h > +++ b/linux-user/sh4/target_syscall.h > @@ -16,8 +16,9 @@ struct target_pt_regs { > #define UNAME_MINIMUM_RELEASE "2.6.32" > > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #define TARGET_FORCE_SHMLBA > > diff --git a/linux-user/sparc/target_syscall.h b/linux-user/sparc/target_syscall.h > index b9160a771b..d8ea04ea83 100644 > --- a/linux-user/sparc/target_syscall.h > +++ b/linux-user/sparc/target_syscall.h > @@ -21,8 +21,9 @@ struct target_pt_regs { > */ > #define TARGET_CLONE_BACKWARDS > #define TARGET_MINSIGSTKSZ 4096 > -#define TARGET_MLOCKALL_MCL_CURRENT 0x2000 > -#define TARGET_MLOCKALL_MCL_FUTURE 0x4000 > +#define TARGET_MCL_CURRENT 0x2000 > +#define TARGET_MCL_FUTURE 0x4000 > +#define TARGET_MCL_ONFAULT 0x8000 > > /* For SPARC SHMLBA is determined at runtime in the kernel, and > * libc has to runtime-detect it using the hwcaps (see glibc > diff --git a/linux-user/sparc64/target_syscall.h b/linux-user/sparc64/target_syscall.h > index 3073a23e03..696a68b1ed 100644 > --- a/linux-user/sparc64/target_syscall.h > +++ b/linux-user/sparc64/target_syscall.h > @@ -22,8 +22,9 @@ struct target_pt_regs { > */ > #define TARGET_CLONE_BACKWARDS > #define TARGET_MINSIGSTKSZ 4096 > -#define TARGET_MLOCKALL_MCL_CURRENT 0x2000 > -#define TARGET_MLOCKALL_MCL_FUTURE 0x4000 > +#define TARGET_MCL_CURRENT 0x2000 > +#define TARGET_MCL_FUTURE 0x4000 > +#define TARGET_MCL_ONFAULT 0x8000 > > #define TARGET_FORCE_SHMLBA > > diff --git a/linux-user/strace.c b/linux-user/strace.c > index 7dc239b9f1..40f863c6e2 100644 > --- a/linux-user/strace.c > +++ b/linux-user/strace.c > @@ -1194,6 +1194,15 @@ UNUSED static struct flags falloc_flags[] = { > #endif > }; > > +UNUSED static struct flags mlockall_flags[] = { > + FLAG_TARGET(MCL_CURRENT), > + FLAG_TARGET(MCL_FUTURE), > +#ifdef MCL_ONFAULT > + FLAG_TARGET(MCL_ONFAULT), > +#endif > + FLAG_END, > +}; > + > /* > * print_xxx utility functions. These are used to print syscall > * parameters in certain format. All of these have parameter > @@ -2005,6 +2014,18 @@ print_ftruncate64(void *cpu_env, const struct syscallname *name, > } > #endif > > +#ifdef TARGET_NR_mlockall > +static void > +print_mlockall(void *cpu_env, const struct syscallname *name, > + abi_long arg0, abi_long arg1, abi_long arg2, > + abi_long arg3, abi_long arg4, abi_long arg5) > +{ > + print_syscall_prologue(name); > + print_flags(mlockall_flags, arg0, 1); > + print_syscall_epilogue(name); > +} > +#endif > + > #if defined(TARGET_NR_socket) > static void > print_socket(void *cpu_env, const struct syscallname *name, > diff --git a/linux-user/strace.list b/linux-user/strace.list > index 8e5303d035..d0ea7f3464 100644 > --- a/linux-user/strace.list > +++ b/linux-user/strace.list > @@ -568,13 +568,13 @@ > { TARGET_NR_mknodat, "mknodat" , NULL, print_mknodat, NULL }, > #endif > #ifdef TARGET_NR_mlock > -{ TARGET_NR_mlock, "mlock" , NULL, NULL, NULL }, > +{ TARGET_NR_mlock, "mlock" , "%s(%p," TARGET_FMT_lu ")", NULL, NULL }, > #endif > #ifdef TARGET_NR_mlock2 > { TARGET_NR_mlock2, "mlock2" , NULL, NULL, NULL }, > #endif > #ifdef TARGET_NR_mlockall > -{ TARGET_NR_mlockall, "mlockall" , NULL, NULL, NULL }, > +{ TARGET_NR_mlockall, "mlockall" , NULL, print_mlockall, NULL }, > #endif > #ifdef TARGET_NR_mmap > { TARGET_NR_mmap, "mmap" , NULL, print_mmap, print_syscall_ret_addr }, > @@ -637,10 +637,10 @@ > { TARGET_NR_multiplexer, "multiplexer" , NULL, NULL, NULL }, > #endif > #ifdef TARGET_NR_munlock > -{ TARGET_NR_munlock, "munlock" , NULL, NULL, NULL }, > +{ TARGET_NR_munlock, "munlock" , "%s(%p," TARGET_FMT_lu ")", NULL, NULL }, > #endif > #ifdef TARGET_NR_munlockall > -{ TARGET_NR_munlockall, "munlockall" , NULL, NULL, NULL }, > +{ TARGET_NR_munlockall, "munlockall" , "%s()", NULL, NULL }, > #endif > #ifdef TARGET_NR_munmap > { TARGET_NR_munmap, "munmap" , NULL, print_munmap, NULL }, > diff --git a/linux-user/syscall.c b/linux-user/syscall.c > index 1517096a9b..24d915f0ff 100644 > --- a/linux-user/syscall.c > +++ b/linux-user/syscall.c > @@ -6906,12 +6906,18 @@ static inline int target_to_host_mlockall_arg(int arg) > { > int result = 0; > > - if (arg & TARGET_MLOCKALL_MCL_CURRENT) { > + if (arg & TARGET_MCL_CURRENT) { > result |= MCL_CURRENT; > } > - if (arg & TARGET_MLOCKALL_MCL_FUTURE) { > + if (arg & TARGET_MCL_FUTURE) { > result |= MCL_FUTURE; > } > +#ifdef MCL_ONFAULT > + if (arg & TARGET_MCL_ONFAULT) { > + result |= MCL_ONFAULT; > + } > +#endif > + > return result; > } > #endif > diff --git a/linux-user/tilegx/target_syscall.h b/linux-user/tilegx/target_syscall.h > index d731acdafa..8e9db734b8 100644 > --- a/linux-user/tilegx/target_syscall.h > +++ b/linux-user/tilegx/target_syscall.h > @@ -34,8 +34,9 @@ struct target_pt_regs { > tilegx_reg_t pad[2]; > }; > > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > /* For faultnum */ > #define TARGET_INT_SWINT_1 14 > diff --git a/linux-user/x86_64/target_syscall.h b/linux-user/x86_64/target_syscall.h > index 5e221e1d9d..3ecccb72be 100644 > --- a/linux-user/x86_64/target_syscall.h > +++ b/linux-user/x86_64/target_syscall.h > @@ -101,7 +101,8 @@ struct target_msqid64_ds { > #define TARGET_ARCH_GET_FS 0x1003 > #define TARGET_ARCH_GET_GS 0x1004 > #define TARGET_MINSIGSTKSZ 2048 > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #endif /* X86_64_TARGET_SYSCALL_H */ > diff --git a/linux-user/xtensa/target_syscall.h b/linux-user/xtensa/target_syscall.h > index 3866dad849..afc86a153f 100644 > --- a/linux-user/xtensa/target_syscall.h > +++ b/linux-user/xtensa/target_syscall.h > @@ -43,7 +43,8 @@ struct target_pt_regs { > xtensa_reg_t areg[16]; > }; > > -#define TARGET_MLOCKALL_MCL_CURRENT 1 > -#define TARGET_MLOCKALL_MCL_FUTURE 2 > +#define TARGET_MCL_CURRENT 1 > +#define TARGET_MCL_FUTURE 2 > +#define TARGET_MCL_ONFAULT 4 > > #endif > Applied to my linux-user-for-5.2 branch. Thanks, Laurent
diff --git a/linux-user/aarch64/target_syscall.h b/linux-user/aarch64/target_syscall.h index 995e475c73..3194e6b009 100644 --- a/linux-user/aarch64/target_syscall.h +++ b/linux-user/aarch64/target_syscall.h @@ -16,8 +16,9 @@ struct target_pt_regs { #define UNAME_MINIMUM_RELEASE "3.8.0" #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #define TARGET_PR_SVE_SET_VL 50 #define TARGET_PR_SVE_GET_VL 51 diff --git a/linux-user/alpha/target_syscall.h b/linux-user/alpha/target_syscall.h index 3426cc5b4e..fd389422e3 100644 --- a/linux-user/alpha/target_syscall.h +++ b/linux-user/alpha/target_syscall.h @@ -258,7 +258,8 @@ struct target_pt_regs { #define TARGET_UAC_NOFIX 2 #define TARGET_UAC_SIGBUS 4 #define TARGET_MINSIGSTKSZ 4096 -#define TARGET_MLOCKALL_MCL_CURRENT 0x2000 -#define TARGET_MLOCKALL_MCL_FUTURE 0x4000 +#define TARGET_MCL_CURRENT 0x2000 +#define TARGET_MCL_FUTURE 0x4000 +#define TARGET_MCL_ONFAULT 0x8000 #endif /* ALPHA_TARGET_SYSCALL_H */ diff --git a/linux-user/arm/target_syscall.h b/linux-user/arm/target_syscall.h index f85cbdaf56..e870ed7a54 100644 --- a/linux-user/arm/target_syscall.h +++ b/linux-user/arm/target_syscall.h @@ -28,8 +28,10 @@ struct target_pt_regs { #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 + #define TARGET_WANT_OLD_SYS_SELECT #define TARGET_FORCE_SHMLBA diff --git a/linux-user/cris/target_syscall.h b/linux-user/cris/target_syscall.h index 29d69009ff..d109a6b42a 100644 --- a/linux-user/cris/target_syscall.h +++ b/linux-user/cris/target_syscall.h @@ -40,7 +40,8 @@ struct target_pt_regs { #define TARGET_CLONE_BACKWARDS2 #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #endif diff --git a/linux-user/hppa/target_syscall.h b/linux-user/hppa/target_syscall.h index e2f366839d..f34e05edb5 100644 --- a/linux-user/hppa/target_syscall.h +++ b/linux-user/hppa/target_syscall.h @@ -23,8 +23,9 @@ struct target_pt_regs { #define UNAME_MINIMUM_RELEASE "2.6.32" #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #undef TARGET_ENOMSG #define TARGET_ENOMSG 35 diff --git a/linux-user/i386/target_syscall.h b/linux-user/i386/target_syscall.h index 2854758134..ed356b3908 100644 --- a/linux-user/i386/target_syscall.h +++ b/linux-user/i386/target_syscall.h @@ -151,8 +151,9 @@ struct target_vm86plus_struct { #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #define TARGET_WANT_OLD_SYS_SELECT #endif /* I386_TARGET_SYSCALL_H */ diff --git a/linux-user/m68k/target_syscall.h b/linux-user/m68k/target_syscall.h index c0366b1c62..23359a6299 100644 --- a/linux-user/m68k/target_syscall.h +++ b/linux-user/m68k/target_syscall.h @@ -21,9 +21,9 @@ struct target_pt_regs { #define UNAME_MINIMUM_RELEASE "2.6.32" #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 - +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #define TARGET_WANT_OLD_SYS_SELECT #endif /* M68K_TARGET_SYSCALL_H */ diff --git a/linux-user/microblaze/target_syscall.h b/linux-user/microblaze/target_syscall.h index 4141cbaa5e..7f653db34f 100644 --- a/linux-user/microblaze/target_syscall.h +++ b/linux-user/microblaze/target_syscall.h @@ -50,8 +50,9 @@ struct target_pt_regs { #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #define TARGET_WANT_NI_OLD_SELECT diff --git a/linux-user/mips/target_syscall.h b/linux-user/mips/target_syscall.h index d5509a34a7..dd6fd7af8e 100644 --- a/linux-user/mips/target_syscall.h +++ b/linux-user/mips/target_syscall.h @@ -234,8 +234,9 @@ struct target_pt_regs { #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #define TARGET_FORCE_SHMLBA diff --git a/linux-user/mips64/target_syscall.h b/linux-user/mips64/target_syscall.h index 8ccc46822c..8594955eec 100644 --- a/linux-user/mips64/target_syscall.h +++ b/linux-user/mips64/target_syscall.h @@ -231,8 +231,9 @@ struct target_pt_regs { #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #define TARGET_FORCE_SHMLBA diff --git a/linux-user/nios2/target_syscall.h b/linux-user/nios2/target_syscall.h index f3b2a500f4..78006c24d4 100644 --- a/linux-user/nios2/target_syscall.h +++ b/linux-user/nios2/target_syscall.h @@ -31,7 +31,8 @@ struct target_pt_regs { }; #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #endif /* NIOS2_TARGET_SYSCALL_H */ diff --git a/linux-user/openrisc/target_syscall.h b/linux-user/openrisc/target_syscall.h index d586d2a018..ef0d89a551 100644 --- a/linux-user/openrisc/target_syscall.h +++ b/linux-user/openrisc/target_syscall.h @@ -16,8 +16,9 @@ struct target_pt_regs { #define UNAME_MINIMUM_RELEASE "2.6.32" #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #define MMAP_SHIFT TARGET_PAGE_BITS diff --git a/linux-user/ppc/target_syscall.h b/linux-user/ppc/target_syscall.h index afc0570410..c461f878f2 100644 --- a/linux-user/ppc/target_syscall.h +++ b/linux-user/ppc/target_syscall.h @@ -72,8 +72,9 @@ struct target_revectored_struct { #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 0x2000 -#define TARGET_MLOCKALL_MCL_FUTURE 0x4000 +#define TARGET_MCL_CURRENT 0x2000 +#define TARGET_MCL_FUTURE 0x4000 +#define TARGET_MCL_ONFAULT 0x8000 #define TARGET_WANT_NI_OLD_SELECT #endif /* PPC_TARGET_SYSCALL_H */ diff --git a/linux-user/riscv/target_syscall.h b/linux-user/riscv/target_syscall.h index a88e821f73..dc597c8972 100644 --- a/linux-user/riscv/target_syscall.h +++ b/linux-user/riscv/target_syscall.h @@ -51,8 +51,9 @@ struct target_pt_regs { #define UNAME_MINIMUM_RELEASE "4.15.0" #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 /* clone(flags, newsp, ptidptr, tls, ctidptr) for RISC-V */ /* This comes from linux/kernel/fork.c, CONFIG_CLONE_BACKWARDS */ diff --git a/linux-user/s390x/target_syscall.h b/linux-user/s390x/target_syscall.h index 8d4f609eaa..94f84178db 100644 --- a/linux-user/s390x/target_syscall.h +++ b/linux-user/s390x/target_syscall.h @@ -28,7 +28,8 @@ struct target_pt_regs { #define TARGET_CLONE_BACKWARDS2 #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #endif /* S390X_TARGET_SYSCALL_H */ diff --git a/linux-user/sh4/target_syscall.h b/linux-user/sh4/target_syscall.h index 2b5f75be13..c1437adafe 100644 --- a/linux-user/sh4/target_syscall.h +++ b/linux-user/sh4/target_syscall.h @@ -16,8 +16,9 @@ struct target_pt_regs { #define UNAME_MINIMUM_RELEASE "2.6.32" #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #define TARGET_FORCE_SHMLBA diff --git a/linux-user/sparc/target_syscall.h b/linux-user/sparc/target_syscall.h index b9160a771b..d8ea04ea83 100644 --- a/linux-user/sparc/target_syscall.h +++ b/linux-user/sparc/target_syscall.h @@ -21,8 +21,9 @@ struct target_pt_regs { */ #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 4096 -#define TARGET_MLOCKALL_MCL_CURRENT 0x2000 -#define TARGET_MLOCKALL_MCL_FUTURE 0x4000 +#define TARGET_MCL_CURRENT 0x2000 +#define TARGET_MCL_FUTURE 0x4000 +#define TARGET_MCL_ONFAULT 0x8000 /* For SPARC SHMLBA is determined at runtime in the kernel, and * libc has to runtime-detect it using the hwcaps (see glibc diff --git a/linux-user/sparc64/target_syscall.h b/linux-user/sparc64/target_syscall.h index 3073a23e03..696a68b1ed 100644 --- a/linux-user/sparc64/target_syscall.h +++ b/linux-user/sparc64/target_syscall.h @@ -22,8 +22,9 @@ struct target_pt_regs { */ #define TARGET_CLONE_BACKWARDS #define TARGET_MINSIGSTKSZ 4096 -#define TARGET_MLOCKALL_MCL_CURRENT 0x2000 -#define TARGET_MLOCKALL_MCL_FUTURE 0x4000 +#define TARGET_MCL_CURRENT 0x2000 +#define TARGET_MCL_FUTURE 0x4000 +#define TARGET_MCL_ONFAULT 0x8000 #define TARGET_FORCE_SHMLBA diff --git a/linux-user/strace.c b/linux-user/strace.c index 7dc239b9f1..40f863c6e2 100644 --- a/linux-user/strace.c +++ b/linux-user/strace.c @@ -1194,6 +1194,15 @@ UNUSED static struct flags falloc_flags[] = { #endif }; +UNUSED static struct flags mlockall_flags[] = { + FLAG_TARGET(MCL_CURRENT), + FLAG_TARGET(MCL_FUTURE), +#ifdef MCL_ONFAULT + FLAG_TARGET(MCL_ONFAULT), +#endif + FLAG_END, +}; + /* * print_xxx utility functions. These are used to print syscall * parameters in certain format. All of these have parameter @@ -2005,6 +2014,18 @@ print_ftruncate64(void *cpu_env, const struct syscallname *name, } #endif +#ifdef TARGET_NR_mlockall +static void +print_mlockall(void *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + print_syscall_prologue(name); + print_flags(mlockall_flags, arg0, 1); + print_syscall_epilogue(name); +} +#endif + #if defined(TARGET_NR_socket) static void print_socket(void *cpu_env, const struct syscallname *name, diff --git a/linux-user/strace.list b/linux-user/strace.list index 8e5303d035..d0ea7f3464 100644 --- a/linux-user/strace.list +++ b/linux-user/strace.list @@ -568,13 +568,13 @@ { TARGET_NR_mknodat, "mknodat" , NULL, print_mknodat, NULL }, #endif #ifdef TARGET_NR_mlock -{ TARGET_NR_mlock, "mlock" , NULL, NULL, NULL }, +{ TARGET_NR_mlock, "mlock" , "%s(%p," TARGET_FMT_lu ")", NULL, NULL }, #endif #ifdef TARGET_NR_mlock2 { TARGET_NR_mlock2, "mlock2" , NULL, NULL, NULL }, #endif #ifdef TARGET_NR_mlockall -{ TARGET_NR_mlockall, "mlockall" , NULL, NULL, NULL }, +{ TARGET_NR_mlockall, "mlockall" , NULL, print_mlockall, NULL }, #endif #ifdef TARGET_NR_mmap { TARGET_NR_mmap, "mmap" , NULL, print_mmap, print_syscall_ret_addr }, @@ -637,10 +637,10 @@ { TARGET_NR_multiplexer, "multiplexer" , NULL, NULL, NULL }, #endif #ifdef TARGET_NR_munlock -{ TARGET_NR_munlock, "munlock" , NULL, NULL, NULL }, +{ TARGET_NR_munlock, "munlock" , "%s(%p," TARGET_FMT_lu ")", NULL, NULL }, #endif #ifdef TARGET_NR_munlockall -{ TARGET_NR_munlockall, "munlockall" , NULL, NULL, NULL }, +{ TARGET_NR_munlockall, "munlockall" , "%s()", NULL, NULL }, #endif #ifdef TARGET_NR_munmap { TARGET_NR_munmap, "munmap" , NULL, print_munmap, NULL }, diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 1517096a9b..24d915f0ff 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -6906,12 +6906,18 @@ static inline int target_to_host_mlockall_arg(int arg) { int result = 0; - if (arg & TARGET_MLOCKALL_MCL_CURRENT) { + if (arg & TARGET_MCL_CURRENT) { result |= MCL_CURRENT; } - if (arg & TARGET_MLOCKALL_MCL_FUTURE) { + if (arg & TARGET_MCL_FUTURE) { result |= MCL_FUTURE; } +#ifdef MCL_ONFAULT + if (arg & TARGET_MCL_ONFAULT) { + result |= MCL_ONFAULT; + } +#endif + return result; } #endif diff --git a/linux-user/tilegx/target_syscall.h b/linux-user/tilegx/target_syscall.h index d731acdafa..8e9db734b8 100644 --- a/linux-user/tilegx/target_syscall.h +++ b/linux-user/tilegx/target_syscall.h @@ -34,8 +34,9 @@ struct target_pt_regs { tilegx_reg_t pad[2]; }; -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 /* For faultnum */ #define TARGET_INT_SWINT_1 14 diff --git a/linux-user/x86_64/target_syscall.h b/linux-user/x86_64/target_syscall.h index 5e221e1d9d..3ecccb72be 100644 --- a/linux-user/x86_64/target_syscall.h +++ b/linux-user/x86_64/target_syscall.h @@ -101,7 +101,8 @@ struct target_msqid64_ds { #define TARGET_ARCH_GET_FS 0x1003 #define TARGET_ARCH_GET_GS 0x1004 #define TARGET_MINSIGSTKSZ 2048 -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #endif /* X86_64_TARGET_SYSCALL_H */ diff --git a/linux-user/xtensa/target_syscall.h b/linux-user/xtensa/target_syscall.h index 3866dad849..afc86a153f 100644 --- a/linux-user/xtensa/target_syscall.h +++ b/linux-user/xtensa/target_syscall.h @@ -43,7 +43,8 @@ struct target_pt_regs { xtensa_reg_t areg[16]; }; -#define TARGET_MLOCKALL_MCL_CURRENT 1 -#define TARGET_MLOCKALL_MCL_FUTURE 2 +#define TARGET_MCL_CURRENT 1 +#define TARGET_MCL_FUTURE 2 +#define TARGET_MCL_ONFAULT 4 #endif
This patch implements strace argument printing functionality for following syscalls: * mlock, munlock, mlockall, munlockall - lock and unlock memory int mlock(const void *addr, size_t len) int munlock(const void *addr, size_t len) int mlockall(int flags) int munlockall(void) man page: https://man7.org/linux/man-pages/man2/mlock.2.html Implementation notes: Syscall mlockall() takes an argument that is composed of predefined values which represent flags that determine the type of locking operation that is to be performed. For that reason, a printing function "print_mlockall" was stated in file "strace.list". This printing function uses an already existing function "print_flags()" to print the "flags" argument. These flags are stated inside an array "mlockall_flags" that contains values of type "struct flags". These values are instantiated using an existing macro "FLAG_TARGET()" that crates aproppriate target flag values based on those defined in files '/target_syscall.h'. These target flag values were changed from "TARGET_MLOCKALL_MCL*" to "TARGET_MCL_*" so that they can be aproppriately set and recognised in "strace.c" with "FLAG_TARGET()". Value for "MCL_ONFAULT" was added in this patch. This value was also added in "syscall.c" in function "target_to_host_mlockall_arg()". Because this flag value was added in kernel version 4.4, it is enwrapped in an #ifdef directive (both in "syscall.c" and in "strace.c") as to support older kernel versions. The other syscalls have only primitive argument types, so the rest of the implementation was handled by stating an appropriate printing format in file "strace.list". Syscall mlock2() is not implemented in "syscall.c" and thus it's argument printing is not implemented in this patch. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> --- linux-user/aarch64/target_syscall.h | 5 +++-- linux-user/alpha/target_syscall.h | 5 +++-- linux-user/arm/target_syscall.h | 6 ++++-- linux-user/cris/target_syscall.h | 5 +++-- linux-user/hppa/target_syscall.h | 5 +++-- linux-user/i386/target_syscall.h | 5 +++-- linux-user/m68k/target_syscall.h | 6 +++--- linux-user/microblaze/target_syscall.h | 5 +++-- linux-user/mips/target_syscall.h | 5 +++-- linux-user/mips64/target_syscall.h | 5 +++-- linux-user/nios2/target_syscall.h | 5 +++-- linux-user/openrisc/target_syscall.h | 5 +++-- linux-user/ppc/target_syscall.h | 5 +++-- linux-user/riscv/target_syscall.h | 5 +++-- linux-user/s390x/target_syscall.h | 5 +++-- linux-user/sh4/target_syscall.h | 5 +++-- linux-user/sparc/target_syscall.h | 5 +++-- linux-user/sparc64/target_syscall.h | 5 +++-- linux-user/strace.c | 21 +++++++++++++++++++++ linux-user/strace.list | 8 ++++---- linux-user/syscall.c | 10 ++++++++-- linux-user/tilegx/target_syscall.h | 5 +++-- linux-user/x86_64/target_syscall.h | 5 +++-- linux-user/xtensa/target_syscall.h | 5 +++-- 24 files changed, 97 insertions(+), 49 deletions(-)