bad_execv

bad_execv - { int rv; if (exec_common_fork() != 0) {...

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/* * bad calls to execv() */ #include <sys/types.h> #include <stdlib.h> #include <unistd.h> #include <errno.h> #include <err.h> #include "config.h" #include "test.h" static int exec_common_fork(void) { int pid, rv, status; pid = fork(); if (pid<0) { warn("UH-OH: fork failed"); return -1; } if (pid==0) { /* child */ return 0; } rv = waitpid(pid, &status, 0); if (rv == -1) { warn("UH-OH: waitpid failed"); return -1; } if (status != MAGIC_STATUS) { warnx("FAILURE: wrong exit code of subprocess"); } return 1; } static void exec_badprog(const void *prog, const char *desc) { int rv; char *args[2]; args[0] = (char *)"foo"; args[1] = NULL; if (exec_common_fork() != 0) { return; } rv = execv(prog, args); report_test(rv, errno, EFAULT, desc); exit(MAGIC_STATUS); }
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static void exec_emptyprog(void) { int rv; char *args[2]; args[0] = (char *)"foo"; args[1] = NULL; if (exec_common_fork() != 0) { return; } rv = execv("", args); report_test2(rv, errno, EINVAL, EISDIR, "exec the empty string"); exit(MAGIC_STATUS); } static void exec_badargs(void *args, const char *desc)
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Unformatted text preview: { int rv; if (exec_common_fork() != 0) { return; } rv = execv(&quot;/bin/true&quot;, args); report_test(rv, errno, EFAULT, desc); exit(MAGIC_STATUS); } static void exec_onearg(void *ptr, const char *desc) { int rv; char *args[3]; args[0] = (char *)&quot;foo&quot;; args[1] = (char *)ptr; args[2] = NULL; if (exec_common_fork() != 0) { return; } rv = execv(&quot;/bin/true&quot;, args); report_test(rv, errno, EFAULT, desc); exit(MAGIC_STATUS); } void test_execv(void) { exec_badprog(NULL, &quot;exec NULL&quot;); exec_badprog(INVAL_PTR, &quot;exec invalid pointer&quot;); exec_badprog(KERN_PTR, &quot;exec kernel pointer&quot;); exec_emptyprog(); exec_badargs(NULL, &quot;exec /bin/true with NULL arglist&quot;); exec_badargs(INVAL_PTR, &quot;exec /bin/true with invalid pointer arglist&quot;); exec_badargs(KERN_PTR, &quot;exec /bin/true with kernel pointer arglist&quot;); exec_onearg(INVAL_PTR, &quot;exec /bin/true with invalid pointer arg&quot;); exec_onearg(KERN_PTR, &quot;exec /bin/true with kernel pointer arg&quot;); }...
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This note was uploaded on 11/10/2009 for the course CS 536 taught by Professor Lums during the Spring '09 term at Indiana.

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bad_execv - { int rv; if (exec_common_fork() != 0) {...

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