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Viewing changes to src/passwd/getpw_r.c

  • Committer: Package Import Robot
  • Author(s): Kevin Bortis
  • Date: 2013-09-20 20:54:14 UTC
  • Revision ID: package-import@ubuntu.com-20130920205414-5b61trtmma18w58o
Tags: upstream-0.9.13
Import upstream version 0.9.13

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Lines of Context:
src/passwd/getpw_r.c
 
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#include "pwf.h"
 
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#include <pthread.h>
 
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#define FIX(x) (pw->pw_##x = pw->pw_##x-line+buf)
 
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static int getpw_r(const char *name, uid_t uid, struct passwd *pw, char *buf, size_t size, struct passwd **res)
 
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{
 
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        FILE *f;
 
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        char *line = 0;
 
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        size_t len = 0;
 
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        int rv = 0;
 
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        int cs;
 
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        pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
 
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        f = fopen("/etc/passwd", "rbe");
 
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        if (!f) {
 
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                rv = errno;
 
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                goto done;
 
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        }
 
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        *res = 0;
 
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        while (__getpwent_a(f, pw, &line, &len)) {
 
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                if (name && !strcmp(name, pw->pw_name)
 
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                || !name && pw->pw_uid == uid) {
 
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                        if (size < len) {
 
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                                rv = ERANGE;
 
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                                break;
 
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                        }
 
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                        *res = pw;
 
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                        memcpy(buf, line, len);
 
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                        FIX(name);
 
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                        FIX(passwd);
 
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                        FIX(gecos);
 
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                        FIX(dir);
 
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                        FIX(shell);
 
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                        break;
 
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                }
 
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        }
 
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        free(line);
 
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        fclose(f);
 
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done:
 
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        pthread_setcancelstate(cs, 0);
 
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        return rv;
 
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}
 
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int getpwnam_r(const char *name, struct passwd *pw, char *buf, size_t size, struct passwd **res)
 
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{
 
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        return getpw_r(name, 0, pw, buf, size, res);
 
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}
 
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int getpwuid_r(uid_t uid, struct passwd *pw, char *buf, size_t size, struct passwd **res)
 
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{
 
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        return getpw_r(0, uid, pw, buf, size, res);
 
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}