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gcore: split code to open core file into helper

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Reviewed by:	markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D29955
This commit is contained in:
Konstantin Belousov 2021-04-24 13:31:58 +03:00
parent 87a64872cd
commit c192228b73
1 changed files with 17 additions and 8 deletions
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25
usr.bin/gcore/gcore.c
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@ -78,12 +78,27 @@ static pid_t pid;
SET_DECLARE(dumpset, struct dumpers); SET_DECLARE(dumpset, struct dumpers);
static int
open_corefile(char *corefile)
{
char fname[MAXPATHLEN];
if (corefile == NULL) {
(void)snprintf(fname, sizeof(fname), "core.%d", pid);
corefile = fname;
}
fd = open(corefile, O_RDWR | O_CREAT | O_TRUNC, DEFFILEMODE);
if (fd < 0)
err(1, "%s", corefile);
return (fd);
}
int int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
int ch, efd, fd, name[4]; int ch, efd, fd, name[4];
char *binfile, *corefile; char *binfile, *corefile;
char passpath[MAXPATHLEN], fname[MAXPATHLEN]; char passpath[MAXPATHLEN];
struct dumpers **d, *dumper; struct dumpers **d, *dumper;
size_t len; size_t len;
@ -138,13 +153,7 @@ main(int argc, char *argv[])
} }
if (dumper == NULL) if (dumper == NULL)
errx(1, "Invalid executable file"); errx(1, "Invalid executable file");
if (corefile == NULL) { fd = open_corefile(corefile);
(void)snprintf(fname, sizeof(fname), "core.%d", pid);
corefile = fname;
}
fd = open(corefile, O_RDWR|O_CREAT|O_TRUNC, DEFFILEMODE);
if (fd < 0)
err(1, "%s", corefile);
dumper->dump(efd, fd, pid); dumper->dump(efd, fd, pid);
(void)close(fd); (void)close(fd);