Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
95 lines
1.6 KiB
C
95 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* This test covers the PR_SET_NAME functionality of prctl calls
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*/
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#include <errno.h>
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#include <sys/prctl.h>
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#include <string.h>
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#include "kselftest_harness.h"
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#define CHANGE_NAME "changename"
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#define EMPTY_NAME ""
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#define TASK_COMM_LEN 16
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#define MAX_PATH_LEN 50
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int set_name(char *name)
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{
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int res;
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res = prctl(PR_SET_NAME, name, NULL, NULL, NULL);
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if (res < 0)
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return -errno;
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return res;
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}
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int check_is_name_correct(char *check_name)
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{
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char name[TASK_COMM_LEN];
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int res;
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res = prctl(PR_GET_NAME, name, NULL, NULL, NULL);
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if (res < 0)
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return -errno;
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return !strcmp(name, check_name);
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}
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int check_null_pointer(char *check_name)
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{
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char *name = NULL;
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int res;
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res = prctl(PR_GET_NAME, name, NULL, NULL, NULL);
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return res;
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}
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int check_name(void)
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{
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int pid;
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pid = getpid();
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FILE *fptr = NULL;
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char path[MAX_PATH_LEN] = {};
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char name[TASK_COMM_LEN] = {};
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char output[TASK_COMM_LEN] = {};
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int j;
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j = snprintf(path, MAX_PATH_LEN, "/proc/self/task/%d/comm", pid);
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fptr = fopen(path, "r");
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if (!fptr)
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return -EIO;
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fscanf(fptr, "%s", output);
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if (ferror(fptr))
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return -EIO;
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int res = prctl(PR_GET_NAME, name, NULL, NULL, NULL);
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if (res < 0)
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return -errno;
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return !strcmp(output, name);
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}
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TEST(rename_process) {
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EXPECT_GE(set_name(CHANGE_NAME), 0);
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EXPECT_TRUE(check_is_name_correct(CHANGE_NAME));
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EXPECT_GE(set_name(EMPTY_NAME), 0);
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EXPECT_TRUE(check_is_name_correct(EMPTY_NAME));
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EXPECT_GE(set_name(CHANGE_NAME), 0);
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EXPECT_LT(check_null_pointer(CHANGE_NAME), 0);
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EXPECT_TRUE(check_name());
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}
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TEST_HARNESS_MAIN
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