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tools: acrn-manager: refine the usage of api 'snprintf'

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Return value check for snprintf function

Tracked-On: #1254
Signed-off-by: Tianhua Sun <tianhuax.s.sun@intel.com>
Acked-by: Yan, Like <like.yan@intel.com>
Reviewed-by: Yonghua Huang <yonghua.huang@intel.com>
Reviewed-by: Kaige Fu <kaige.fu@intel.com>
This commit is contained in:
Tianhua Sun 2018-10-26 18:10:35 +08:00 committed by lijinxia
parent 5493804cab
commit af760f8dce
4 changed files with 113 additions and 41 deletions
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7
tools/acrn-manager/acrn_mngr.c
View File

@ -300,7 +300,10 @@ static int create_new_server(const char *name)
int ret;
char path[128] = { };
snprintf(path, sizeof(path), MNGR_SOCK_FMT, name, getpid());
if (snprintf(path, sizeof(path), MNGR_SOCK_FMT, name, getpid()) >= sizeof(path)) {
printf("WARN: the path is truncated\n");
return -1;
}
mfd = calloc(1, sizeof(*mfd));
if (!mfd) {
@ -449,7 +452,7 @@ static int connect_to_server(const char *name)
mfd->addr.sun_family = AF_UNIX;
ret = snprintf(mfd->addr.sun_path, sizeof(mfd->addr.sun_path),
"/run/acrn/mngr/%s", s_name);
if ((ret >= 0) && (ret < strlen(s_name)))
if (ret >= sizeof(mfd->addr.sun_path))
printf("WARN: %s is truncated\n", s_name);
ret =

12
tools/acrn-manager/acrn_vm_ops.c
View File

@ -258,7 +258,10 @@ int shell_cmd(const char *cmd, char *outbuf, int len)
memset(cmd_buf, 0, sizeof(cmd_buf));
memset(outbuf, 0, len);
snprintf(cmd_buf, sizeof(cmd_buf), "%s 2>&1", cmd);
if (snprintf(cmd_buf, sizeof(cmd_buf), "%s 2>&1", cmd) >= sizeof(cmd_buf)) {
printf("ERROR: shell command is truncated\n");
return -1;
}
ptr = popen(cmd_buf, "re");
if (!ptr)
return -1;
@ -317,8 +320,11 @@ int start_vm(const char *vmname)
{
char cmd[128];
snprintf(cmd, sizeof(cmd), "bash %s/add/%s.sh $(cat %s/add/%s.args)",
ACRNCTL_OPT_ROOT, vmname, ACRNCTL_OPT_ROOT, vmname);
if (snprintf(cmd, sizeof(cmd), "bash %s/add/%s.sh $(cat %s/add/%s.args)",
ACRNCTL_OPT_ROOT, vmname, ACRNCTL_OPT_ROOT, vmname) >= sizeof(cmd)) {
printf("ERROR: command is truncated\n");
return -1;
}
return system(cmd);
}

107
tools/acrn-manager/acrnctl.c
View File

@ -106,8 +106,11 @@ static int write_tmp_file(int fd, int n, char *word[])
if (!strcmp(word[0] + len - strlen("acrn-dm"), "acrn-dm")) {
find_acrn_dm++;
memset(buf, 0, sizeof(buf));
snprintf(buf, sizeof(buf), "%s gentmpfile",
acrnctl_bin_path);
if (snprintf(buf, sizeof(buf), "%s gentmpfile",
acrnctl_bin_path) >= sizeof(buf)) {
printf("ERROR: acrnctl bin path is truncated\n");
return -1;
}
ret = write(fd, buf, strlen(buf));
if (ret < 0)
return -1;
@ -117,7 +120,8 @@ static int write_tmp_file(int fd, int n, char *word[])
while (i < n) {
memset(buf, 0, sizeof(buf));
snprintf(buf, sizeof(buf), " %s", word[i]);
if (snprintf(buf, sizeof(buf), " %s", word[i]) >= sizeof(buf))
printf("WARN: buf is truncated\n");
i++;
ret = write(fd, buf, strlen(buf));
if (ret < 0)
@ -191,7 +195,12 @@ static int acrnctl_do_add(int argc, char *argv[])
/* open tmp file for write */
memset(fname, 0, sizeof(fname));
snprintf(fname, sizeof(fname), "%s%s", argv[1], TMP_FILE_SUFFIX);
if (snprintf(fname, sizeof(fname), "%s%s", argv[1], TMP_FILE_SUFFIX)
>= sizeof(fname)) {
printf("ERROR: file name is truncated\n");
ret = -1;
goto file_exceed;
}
fd_tmp = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0666);
if (fd_tmp < 0) {
perror(fname);
@ -229,21 +238,38 @@ static int acrnctl_do_add(int argc, char *argv[])
goto no_acrn_dm;
}
snprintf(cmd, sizeof(cmd), "mv %s %s.back", argv[1], argv[1]);
if (snprintf(cmd, sizeof(cmd), "mv %s %s.back", argv[1], argv[1])
>= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
ret = -1;
goto get_vmname;
}
system(cmd);
snprintf(cmd, sizeof(cmd), "mv %s %s", fname, argv[1]);
if (snprintf(cmd, sizeof(cmd), "mv %s %s", fname, argv[1]) >= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
ret = -1;
goto get_vmname;
}
system(cmd);
memset(vmname, 0, sizeof(vmname));
snprintf(cmd, sizeof(cmd), "bash %s%s >./%s.result", argv[1],
args, argv[1]);
if (snprintf(cmd, sizeof(cmd), "bash %s%s >./%s.result", argv[1],
args, argv[1]) >= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
ret = -1 ;
goto get_vmname;
}
ret = shell_cmd(cmd, cmd_out, sizeof(cmd_out));
if (ret < 0)
goto get_vmname;
snprintf(cmd, sizeof(cmd), "grep -a \"acrnctl: \" ./%s.result",
argv[1]);
if (snprintf(cmd, sizeof(cmd), "grep -a \"acrnctl: \" ./%s.result",
argv[1]) >= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
ret = -1;
goto get_vmname;
}
ret = shell_cmd(cmd, cmd_out, sizeof(cmd_out));
if (ret < 0)
goto get_vmname;
@ -251,7 +277,11 @@ static int acrnctl_do_add(int argc, char *argv[])
ret = sscanf(cmd_out, "acrnctl: %s", vmname);
if (ret != 1) {
ret = -1;
snprintf(cmd, sizeof(cmd), "cat ./%s.result", argv[1]);
if (snprintf(cmd, sizeof(cmd), "cat ./%s.result", argv[1]) >= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
goto get_vmname;
}
shell_cmd(cmd, cmd_out, sizeof(cmd_out));
/* Properly null-terminate cmd_out */
@ -270,7 +300,12 @@ static int acrnctl_do_add(int argc, char *argv[])
goto get_vmname;
}
snprintf(cmd, sizeof(cmd), "mkdir -p %s/add", ACRNCTL_OPT_ROOT);
if (snprintf(cmd, sizeof(cmd), "mkdir -p %s/add", ACRNCTL_OPT_ROOT)
>= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
ret = -1;
goto get_vmname;
}
system(cmd);
s = vmmngr_find(vmname);
@ -281,28 +316,46 @@ static int acrnctl_do_add(int argc, char *argv[])
goto vm_exist;
}
snprintf(cmd, sizeof(cmd), "cp %s.back %s/add/%s.sh", argv[1],
ACRNCTL_OPT_ROOT, vmname);
if (snprintf(cmd, sizeof(cmd), "cp %s.back %s/add/%s.sh", argv[1],
ACRNCTL_OPT_ROOT, vmname) >= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
ret = -1;
goto vm_exist;
}
system(cmd);
snprintf(cmd, sizeof(cmd), "echo %s >%s/add/%s.args", args,
ACRNCTL_OPT_ROOT, vmname);
if (snprintf(cmd, sizeof(cmd), "echo %s >%s/add/%s.args", args,
ACRNCTL_OPT_ROOT, vmname) >= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
ret = -1;
goto vm_exist;
}
system(cmd);
printf("%s added\n", vmname);
vm_exist:
get_vmname:
snprintf(cmd, sizeof(cmd), "rm -f ./%s.result", argv[1]);
if (snprintf(cmd, sizeof(cmd), "rm -f ./%s.result", argv[1]) >= sizeof(cmd)) {
printf("WARN: cmd is truncated\n");
} else
system(cmd);
snprintf(cmd, sizeof(cmd), "mv %s %s", argv[1], fname);
if (snprintf(cmd, sizeof(cmd), "mv %s %s", argv[1], fname) >= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
ret = -1;
} else
system(cmd);
snprintf(cmd, sizeof(cmd), "mv %s.back %s", argv[1], argv[1]);
if (snprintf(cmd, sizeof(cmd), "mv %s.back %s", argv[1], argv[1]) >= sizeof(cmd)) {
printf("ERROR: cmd is truncated\n");
ret = -1;
} else
system(cmd);
no_acrn_dm:
snprintf(cmd, sizeof(cmd), "rm -f %s", fname);
if (snprintf(cmd, sizeof(cmd), "rm -f %s", fname) >= sizeof(cmd)) {
printf("WARN: cmd is truncated\n");
} else
system(cmd);
write_tmpfile:
close(fd_tmp);
@ -355,11 +408,17 @@ static int acrnctl_do_del(int argc, char *argv[])
state_str[s->state]);
continue;
}
snprintf(cmd, sizeof(cmd), "rm -f %s/add/%s.sh",
ACRNCTL_OPT_ROOT, argv[i]);
if (snprintf(cmd, sizeof(cmd), "rm -f %s/add/%s.sh",
ACRNCTL_OPT_ROOT, argv[i]) >= sizeof(cmd)) {
printf("WARN: cmd is truncated\n");
return -1;
}
system(cmd);
snprintf(cmd, sizeof(cmd), "rm -f %s/add/%s.args",
ACRNCTL_OPT_ROOT, argv[i]);
if (snprintf(cmd, sizeof(cmd), "rm -f %s/add/%s.args",
ACRNCTL_OPT_ROOT, argv[i]) >= sizeof(cmd)) {
printf("WARN: cmd is truncated\n");
return -1;
}
system(cmd);
}

6
tools/acrn-manager/acrnd.c
View File

@ -219,7 +219,10 @@ static void acrnd_run_vm(char *name)
{
char log_path[128] = {};
snprintf(log_path, sizeof(log_path) -1, ACRND_LOG_FMT, name);
if (snprintf(log_path, sizeof(log_path) -1, ACRND_LOG_FMT, name)
>= sizeof(log_path) -1) {
printf("WARN: log path is truncated\n");
} else {
unlink(log_path);
stdin = freopen(log_path, "w+", stdin);
stdout = freopen(log_path, "w+", stdout);
@ -227,6 +230,7 @@ static void acrnd_run_vm(char *name)
fflush(stdin);
fflush(stdout);
fflush(stderr);
}
start_vm(name);
printf("%s exited!\n", name);