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Improve NetBSD KERN_PROC2 bit, mostly from Kamil Rytarowski.

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This commit is contained in:
Nicholas Marriott
2017-02-19 08:31:05 +00:00
parent 203d604bf7
commit 55e76edd3c
1 changed files with 9 additions and 7 deletions
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16
osdep-netbsd.c
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@ -80,30 +80,32 @@ osdep_get_name(int fd, __unused char *tty)
return (NULL); return (NULL);
buf = NULL; buf = NULL;
len = sizeof(bestp); len = sizeof bestp;
mib[0] = CTL_KERN; mib[0] = CTL_KERN;
mib[1] = KERN_PROC2; mib[1] = KERN_PROC2;
mib[2] = KERN_PROC_PGRP; mib[2] = KERN_PROC_PGRP;
mib[4] = sizeof (*buf); mib[4] = sizeof *buf;
mib[5] = 0;
retry: retry:
mib[5] = 0;
if (sysctl(mib, __arraycount(mib), NULL, &len, NULL, 0) == -1) if (sysctl(mib, __arraycount(mib), NULL, &len, NULL, 0) == -1)
return (NULL); return (NULL);
if ((newbuf = realloc(buf, len * sizeof (*buf))) == NULL) if ((newbuf = realloc(buf, len)) == NULL)
goto error; goto error;
buf = newbuf; buf = newbuf;
mib[5] = len / sizeof(*buf); mib[5] = len / (sizeof *buf);
if (sysctl(mib, __arraycount(mib), buf, &len, NULL, 0) == -1) { if (sysctl(mib, __arraycount(mib), buf, &len, NULL, 0) == -1) {
if (errno == ENOMEM) if (errno == ENOMEM)
goto retry; /* possible infinite loop? */ goto retry;
goto error; goto error;
} }
bestp = NULL; bestp = NULL;
for (i = 0; i < len / sizeof (*buf); i++) { for (i = 0; i < len / (sizeof *buf); i++) {
if (buf[i].p_tdev != sb.st_rdev) if (buf[i].p_tdev != sb.st_rdev)
continue; continue;
if (bestp == NULL) if (bestp == NULL)