Dmitry V. Levin
a0bd3749fc
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.
145 lines
2.7 KiB
C
145 lines
2.7 KiB
C
#include "defs.h"
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/* these constants are the same as in <linux/capability.h> */
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enum {
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#include "caps0.h"
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};
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#include "xlat/cap_mask0.h"
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/* these constants are CAP_TO_INDEX'ed constants from <linux/capability.h> */
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enum {
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#include "caps1.h"
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};
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#include "xlat/cap_mask1.h"
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/* these constants are the same as in <linux/capability.h> */
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enum {
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_LINUX_CAPABILITY_VERSION_1 = 0x19980330,
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_LINUX_CAPABILITY_VERSION_2 = 0x20071026,
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_LINUX_CAPABILITY_VERSION_3 = 0x20080522
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};
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#include "xlat/cap_version.h"
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typedef struct user_cap_header_struct {
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uint32_t version;
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int pid;
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} *cap_user_header_t;
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typedef struct user_cap_data_struct {
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uint32_t effective;
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uint32_t permitted;
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uint32_t inheritable;
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} *cap_user_data_t;
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static cap_user_header_t
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get_cap_header(struct tcb *tcp, unsigned long addr)
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{
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static struct user_cap_header_struct header;
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if (!addr || !verbose(tcp))
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return NULL;
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if (umove(tcp, addr, &header) < 0)
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return NULL;
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return &header;
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}
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static void
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print_cap_header(struct tcb *tcp, unsigned long addr, cap_user_header_t h)
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{
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if (!addr) {
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tprints("NULL");
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return;
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}
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if (!h) {
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tprintf("%#lx", addr);
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return;
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}
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tprints("{");
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printxval(cap_version, h->version,
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"_LINUX_CAPABILITY_VERSION_???");
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tprintf(", %d}", h->pid);
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}
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static void
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print_cap_bits(const uint32_t lo, const uint32_t hi)
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{
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if (lo || !hi)
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printflags(cap_mask0, lo, "CAP_???");
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if (hi) {
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if (lo)
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tprints("|");
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printflags(cap_mask1, hi, "CAP_???");
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}
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}
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static void
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print_cap_data(struct tcb *tcp, unsigned long addr, const cap_user_header_t h)
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{
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struct user_cap_data_struct data[2];
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unsigned int len;
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if (!addr) {
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tprints("NULL");
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return;
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}
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if (!h || !verbose(tcp) ||
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(exiting(tcp) && syserror(tcp))) {
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tprintf("%#lx", addr);
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return;
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}
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if (_LINUX_CAPABILITY_VERSION_2 == h->version ||
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_LINUX_CAPABILITY_VERSION_3 == h->version)
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len = 2;
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else
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len = 1;
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if (umoven(tcp, addr, len * sizeof(data[0]), data) < 0) {
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tprintf("%#lx", addr);
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return;
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}
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tprints("{");
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print_cap_bits(data[0].effective, len > 1 ? data[1].effective : 0);
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tprints(", ");
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print_cap_bits(data[0].permitted, len > 1 ? data[1].permitted : 0);
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tprints(", ");
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print_cap_bits(data[0].inheritable, len > 1 ? data[1].inheritable : 0);
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tprints("}");
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}
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SYS_FUNC(capget)
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{
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cap_user_header_t h;
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if (entering(tcp)) {
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h = get_cap_header(tcp, tcp->u_arg[0]);
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print_cap_header(tcp, tcp->u_arg[0], h);
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tprints(", ");
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} else {
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h = syserror(tcp) ? NULL : get_cap_header(tcp, tcp->u_arg[0]);
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print_cap_data(tcp, tcp->u_arg[1], h);
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}
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return 0;
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}
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SYS_FUNC(capset)
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{
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if (entering(tcp)) {
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cap_user_header_t h = get_cap_header(tcp, tcp->u_arg[0]);
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print_cap_header(tcp, tcp->u_arg[0], h);
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tprints(", ");
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print_cap_data(tcp, tcp->u_arg[1], h);
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}
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return 0;
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}
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