Dmitry V. Levin
7c2210190a
* execve.c (decode_execve): New function. (sys_execve): Use it. (sys_execveat): New function. * linux/dummy.h (sys_execveat): Remove. * tests/execveat.c: New file. * tests/execveat.expected: Likewise. * tests/execveat-v.expected: Likewise. * tests/execveat.test: New test. * tests/Makefile.am (check_PROGRAMS): Add execveat. (TESTS): Add execveat.test. (EXTRA_DIST): Add execveat.expected and execveat-v.expected. * tests/.gitignore: Add execveat.
102 lines
1.9 KiB
C
102 lines
1.9 KiB
C
#include "defs.h"
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static void
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printargv(struct tcb *tcp, long addr)
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{
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union {
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unsigned int p32;
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unsigned long p64;
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char data[sizeof(long)];
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} cp;
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const char *sep;
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unsigned int n = 0;
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const unsigned wordsize = current_wordsize;
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cp.p64 = 1;
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for (sep = ""; !abbrev(tcp) || n < max_strlen / 2; sep = ", ", ++n) {
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if (umoven_or_printaddr(tcp, addr, wordsize, cp.data))
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return;
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if (wordsize == 4)
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cp.p64 = cp.p32;
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if (cp.p64 == 0)
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break;
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tprints(sep);
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printstr(tcp, cp.p64, -1);
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addr += wordsize;
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}
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if (cp.p64)
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tprintf("%s...", sep);
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}
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static void
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printargc(const char *fmt, struct tcb *tcp, long addr)
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{
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int count;
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char *cp = NULL;
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for (count = 0; !umoven(tcp, addr, current_wordsize, &cp) && cp; count++) {
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addr += current_wordsize;
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}
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tprintf(fmt, count, count == 1 ? "" : "s");
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}
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static void
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decode_execve(struct tcb *tcp, const unsigned int index)
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{
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printpath(tcp, tcp->u_arg[index + 0]);
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tprints(", ");
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if (!tcp->u_arg[index + 1] || !verbose(tcp))
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printaddr(tcp->u_arg[index + 1]);
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else {
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tprints("[");
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printargv(tcp, tcp->u_arg[index + 1]);
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tprints("]");
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}
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tprints(", ");
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if (!tcp->u_arg[index + 2] || !verbose(tcp))
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printaddr(tcp->u_arg[index + 2]);
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else if (abbrev(tcp))
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printargc("[/* %d var%s */]", tcp, tcp->u_arg[index + 2]);
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else {
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tprints("[");
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printargv(tcp, tcp->u_arg[index + 2]);
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tprints("]");
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}
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}
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SYS_FUNC(execve)
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{
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decode_execve(tcp, 0);
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return RVAL_DECODED;
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}
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SYS_FUNC(execveat)
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{
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print_dirfd(tcp, tcp->u_arg[0]);
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decode_execve(tcp, 1);
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tprints(", ");
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printflags(at_flags, tcp->u_arg[4], "AT_???");
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return RVAL_DECODED;
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}
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#if defined(SPARC) || defined(SPARC64)
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SYS_FUNC(execv)
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{
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printpath(tcp, tcp->u_arg[0]);
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tprints(", ");
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if (!tcp->u_arg[1] || !verbose(tcp))
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printaddr(tcp->u_arg[1]);
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else {
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tprints("[");
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printargv(tcp, tcp->u_arg[1]);
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tprints("]");
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}
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return RVAL_DECODED;
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}
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#endif /* SPARC || SPARC64 */
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