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follow symlinks to find the true passwd file before updating.

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This commit is contained in:
Paul Fox 2007-11-08 01:12:38 +00:00
parent 459a2ba1ef
commit 53bd4015aa
1 changed files with 6 additions and 1 deletions
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7
libbb/update_passwd.c
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@ -52,6 +52,10 @@ int update_passwd(const char *filename, const char *username,
int cnt = 0; int cnt = 0;
int ret = -1; /* failure */ int ret = -1; /* failure */
filename = xmalloc_readlink_follow(filename);
if (filename == NULL)
return -1;
check_selinux_update_passwd(username); check_selinux_update_passwd(username);
/* New passwd file, "/etc/passwd+" for now */ /* New passwd file, "/etc/passwd+" for now */
@ -143,6 +147,7 @@ int update_passwd(const char *filename, const char *username,
free_mem: free_mem:
free(fnamesfx); free(fnamesfx);
free((char*)username); free((char *)filename);
free((char *)username);
return ret; return ret;
} }