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rootless: use snprintf

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use directly snprintf instead of strlen+strcpy.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano
2020-04-13 13:35:38 +02:00
parent 291ad7fbd9
commit c33371fadb
1 changed files with 3 additions and 2 deletions
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5
pkg/rootless/rootless_linux.c
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@ -288,6 +288,7 @@ static void __attribute__((constructor)) init()
char *cwd = getcwd (NULL, 0); char *cwd = getcwd (NULL, 0);
char uid_fmt[16]; char uid_fmt[16];
char gid_fmt[16]; char gid_fmt[16];
size_t len;
if (cwd == NULL) if (cwd == NULL)
{ {
@ -295,13 +296,13 @@ static void __attribute__((constructor)) init()
_exit (EXIT_FAILURE); _exit (EXIT_FAILURE);
} }
if (strlen (xdg_runtime_dir) >= PATH_MAX - strlen (suffix)) len = snprintf (path, PATH_MAX, "%s%s", xdg_runtime_dir, suffix);
if (len >= PATH_MAX)
{ {
fprintf (stderr, "invalid value for XDG_RUNTIME_DIR: %s", strerror (ENAMETOOLONG)); fprintf (stderr, "invalid value for XDG_RUNTIME_DIR: %s", strerror (ENAMETOOLONG));
exit (EXIT_FAILURE); exit (EXIT_FAILURE);
} }
sprintf (path, "%s%s", xdg_runtime_dir, suffix);
fd = open (path, O_RDONLY); fd = open (path, O_RDONLY);
if (fd < 0) if (fd < 0)
{ {