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67 lines
1.5 KiB
67 lines
1.5 KiB
2 years ago
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commit 75fe6d1a1620d84e0e487868feba9b2c0f109610
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Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Date: Wed May 12 10:13:41 2021 +0530
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support: Close fds in copy_func
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copy_func may leave file descriptors open on error, so close them on
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function exit.
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diff --git a/support/shell-container.c b/support/shell-container.c
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index 3869e14683fb74dd..f0a9814ae230d167 100644
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--- a/support/shell-container.c
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+++ b/support/shell-container.c
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@@ -93,8 +93,9 @@ copy_func (char **argv)
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{
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char *sname = argv[0];
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char *dname = argv[1];
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- int sfd, dfd;
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+ int sfd = -1, dfd = -1;
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struct stat st;
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+ int ret = 1;
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sfd = open (sname, O_RDONLY);
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if (sfd < 0)
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@@ -108,7 +109,7 @@ copy_func (char **argv)
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{
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fprintf (stderr, "cp: unable to fstat %s: %s\n",
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sname, strerror (errno));
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- return 1;
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+ goto out;
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}
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dfd = open (dname, O_WRONLY | O_TRUNC | O_CREAT, 0600);
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@@ -116,22 +117,26 @@ copy_func (char **argv)
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{
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fprintf (stderr, "cp: unable to open %s for writing: %s\n",
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dname, strerror (errno));
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- return 1;
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+ goto out;
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}
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if (support_copy_file_range (sfd, 0, dfd, 0, st.st_size, 0) != st.st_size)
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{
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fprintf (stderr, "cp: cannot copy file %s to %s: %s\n",
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sname, dname, strerror (errno));
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- return 1;
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+ goto out;
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}
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- close (sfd);
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- close (dfd);
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-
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+ ret = 0;
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chmod (dname, st.st_mode & 0777);
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- return 0;
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+out:
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+ if (sfd >= 0)
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+ close (sfd);
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+ if (dfd >= 0)
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+ close (dfd);
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+
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+ return ret;
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}
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