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strace/hostname.c

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process.c: move sethostname and gethostname parsers to a separate file * hostname.c: New file. * Makefile.am (strace_SOURCES): Add it. * process.c (sys_sethostname, sys_gethostname): Move to hostname.c.
2014-12-11 22:25:02 +03:00
#include "defs.h"
Fix decoding of sethostname syscall The second argument of sethostname syscall is not an unsigned long but unsigned int. The kernel does not look at the string argument when the length argument is too long. * hostname.c [HAVE_LINUX_UTSNAME_H]: Include <linux/utsname.h>. [!__NEW_UTS_LEN] (__NEW_UTS_LEN): Define. (SYS_FUNC(sethostname)): Treat the second argument as unsigned int. Print the first argument as a pointer when the second argument exceeds __NEW_UTS_LEN. * tests/sethostname.c [HAVE_LINUX_UTSNAME_H]: Include <linux/utsname.h>. [!__NEW_UTS_LEN] (__NEW_UTS_LEN): Define. (main): Use it. Check that the second argument of sethostname is handled as unsigned int. Check that the first argument is printed as a pointer when the second argument exceeds __NEW_UTS_LEN.
2016-12-24 19:23:45 +03:00
#ifdef HAVE_LINUX_UTSNAME_H
# include <linux/utsname.h>
#endif
#ifndef __NEW_UTS_LEN
# define __NEW_UTS_LEN 64
#endif
Declare syscall parsers using SYS_FUNC macro Introduce SYS_FUNC macro to declare and define all syscall parsers. * Makefile.am (BUILT_SOURCES, CLEANFILES): Add sys_func.h. (sys_func.h): New rule. * defs.h (SYS_FUNC_NAME, SYS_FUNC): New macros. * linux/syscall.h: Include "sys_func.h". [NEED_UID16_PARSERS]: Use SYS_FUNC to declare uid16 syscall parsers. Remove other declarations. * linux/alpha/syscallent.h (160, 161): Add sys_ prefix to osf_statfs and osf_fstatfs syscall parsers. * *.c: Use SYS_FUNC to define syscall parsers.
2015-04-07 04:36:50 +03:00
SYS_FUNC(sethostname)
process.c: move sethostname and gethostname parsers to a separate file * hostname.c: New file. * Makefile.am (strace_SOURCES): Add it. * process.c (sys_sethostname, sys_gethostname): Move to hostname.c.
2014-12-11 22:25:02 +03:00
{
Fix decoding of sethostname syscall The second argument of sethostname syscall is not an unsigned long but unsigned int. The kernel does not look at the string argument when the length argument is too long. * hostname.c [HAVE_LINUX_UTSNAME_H]: Include <linux/utsname.h>. [!__NEW_UTS_LEN] (__NEW_UTS_LEN): Define. (SYS_FUNC(sethostname)): Treat the second argument as unsigned int. Print the first argument as a pointer when the second argument exceeds __NEW_UTS_LEN. * tests/sethostname.c [HAVE_LINUX_UTSNAME_H]: Include <linux/utsname.h>. [!__NEW_UTS_LEN] (__NEW_UTS_LEN): Define. (main): Use it. Check that the second argument of sethostname is handled as unsigned int. Check that the first argument is printed as a pointer when the second argument exceeds __NEW_UTS_LEN.
2016-12-24 19:23:45 +03:00
unsigned int len = tcp->u_arg[1];
if (len > __NEW_UTS_LEN) {
printaddr(tcp->u_arg[0]);
} else {
printstrn(tcp, tcp->u_arg[0], len);
}
tprintf(", %u", len);
hostname.c: make use of RVAL_DECODED * hostname.c (sys_sethostname): Update for RVAL_DECODED.
2015-07-20 14:30:38 +03:00
return RVAL_DECODED;
process.c: move sethostname and gethostname parsers to a separate file * hostname.c: New file. * Makefile.am (strace_SOURCES): Add it. * process.c (sys_sethostname, sys_gethostname): Move to hostname.c.
2014-12-11 22:25:02 +03:00
}
#if defined(ALPHA)
Declare syscall parsers using SYS_FUNC macro Introduce SYS_FUNC macro to declare and define all syscall parsers. * Makefile.am (BUILT_SOURCES, CLEANFILES): Add sys_func.h. (sys_func.h): New rule. * defs.h (SYS_FUNC_NAME, SYS_FUNC): New macros. * linux/syscall.h: Include "sys_func.h". [NEED_UID16_PARSERS]: Use SYS_FUNC to declare uid16 syscall parsers. Remove other declarations. * linux/alpha/syscallent.h (160, 161): Add sys_ prefix to osf_statfs and osf_fstatfs syscall parsers. * *.c: Use SYS_FUNC to define syscall parsers.
2015-04-07 04:36:50 +03:00
SYS_FUNC(gethostname)
process.c: move sethostname and gethostname parsers to a separate file * hostname.c: New file. * Makefile.am (strace_SOURCES): Add it. * process.c (sys_sethostname, sys_gethostname): Move to hostname.c.
2014-12-11 22:25:02 +03:00
{
if (exiting(tcp)) {
if (syserror(tcp))
hostname.c: use printaddr * hostname.c (sys_gethostname): Use printaddr.
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printaddr(tcp->u_arg[0]);
process.c: move sethostname and gethostname parsers to a separate file * hostname.c: New file. * Makefile.am (strace_SOURCES): Add it. * process.c (sys_sethostname, sys_gethostname): Move to hostname.c.
2014-12-11 22:25:02 +03:00
else
printstr: rename to printstrn, add printstr as a thin wrapper As about half of all printstr uses cases are invocations with the last argument set to -1, create a dedicated function for this use case. * defs.h (printstr): Rename to printstrn. All callers updated. (printstr): New static inline function. All callers updated.
2016-12-20 19:43:26 +03:00
printstr(tcp, tcp->u_arg[0]);
Automatically replace PRI_kr[dux] with PRI_kl[dux] Remove temporary macros created for transition from long to kernel_ulong_t. Automatically replace PRI_kr[dux] with PRI_kl[dux] using $ git grep -l 'PRI_kr[dux]' | xargs sed -ri 's/PRI_kr([dux])/PRI_kl\1/g' * defs.h (PRI_krd, PRI_kru, PRI_krx): Remove. All users updated.
2016-12-26 13:16:35 +03:00
tprintf(", %" PRI_klu, tcp->u_arg[1]);
process.c: move sethostname and gethostname parsers to a separate file * hostname.c: New file. * Makefile.am (strace_SOURCES): Add it. * process.c (sys_sethostname, sys_gethostname): Move to hostname.c.
2014-12-11 22:25:02 +03:00
}
return 0;
}
#endif /* ALPHA */
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