diff options
author | Elliott Hughes <enh@google.com> | 2014-03-01 01:18:28 +0000 |
---|---|---|
committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2014-03-01 01:18:29 +0000 |
commit | fbcdf6f9fe9212154b7b4bf3a4e6f16ad69ca994 (patch) | |
tree | 43f5763d0d9705369ab26b6e9960fbef6a4317c0 /toolbox/uid_from_user.c | |
parent | 54bb1d3b98075316e0cd1289f218470cb70227ce (diff) | |
parent | 0b024677ec64ebbf298de810929292a693436ad6 (diff) | |
download | system_core-fbcdf6f9fe9212154b7b4bf3a4e6f16ad69ca994.zip system_core-fbcdf6f9fe9212154b7b4bf3a4e6f16ad69ca994.tar.gz system_core-fbcdf6f9fe9212154b7b4bf3a4e6f16ad69ca994.tar.bz2 |
Merge "Switch to BSD chown (for -R, primarily)."
Diffstat (limited to 'toolbox/uid_from_user.c')
-rw-r--r-- | toolbox/uid_from_user.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/toolbox/uid_from_user.c b/toolbox/uid_from_user.c new file mode 100644 index 0000000..d70f410 --- /dev/null +++ b/toolbox/uid_from_user.c @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2014, The Android Open Source Project + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <limits.h> +#include <pwd.h> +#include <stdlib.h> +#include <sys/types.h> + +int uid_from_user(const char* name, uid_t* uid) { + struct passwd* pw = getpwnam(name); + if (pw != NULL) { + *uid = pw->pw_uid; + return 0; + } + // Try to parse as an integer. + char* end_ptr; + unsigned long number = strtoul(name, &end_ptr, 0); + if (end_ptr == name || *end_ptr != '\0' || number > INT_MAX) { + return -1; + } + *uid = (int) number; + return 0; +} |