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Viewing changes to libc-top-half/musl/src/legacy/cuserid.c

  • Committer: mmach
  • Date: 2023-09-12 15:53:36 UTC
  • Revision ID: netbit73@gmail.com-20230912155336-s1r5z5xnszz99zzo
0.0~git20230113.4362b18

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libc-top-half/musl/src/legacy/cuserid.c
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#include <pwd.h>
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#include <stdio.h>
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#include <unistd.h>
 
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#include <string.h>
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char *cuserid(char *buf)
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{
 
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        static char usridbuf[L_cuserid];
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        struct passwd pw, *ppw;
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        long pwb[256];
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        if (getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw))
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                return 0;
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        snprintf(buf, L_cuserid, "%s", pw.pw_name);
 
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        if (buf) *buf = 0;
 
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        getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw);
 
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        if (!ppw)
 
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                return buf;
 
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        size_t len = strnlen(pw.pw_name, L_cuserid);
 
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        if (len == L_cuserid)
 
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                return buf;
 
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        if (!buf) buf = usridbuf;
 
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        memcpy(buf, pw.pw_name, len+1);
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        return buf;
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}